Ok, this feels a bit like a Rogers ad but it's really cool tech and the video includes some looks at some of the Rogers calibration fixtures. https://youtu.be/3YMRfw0uWlw Trevor R.H. Clarke Computer Science House Rochester Institute of Technology retrev@csh.rit.edu http://www.csh.rit.edu/~retrev/

HI Trevor... Thanks for that. It is really fantastic what he has done, and it's more of an ad for the 3D printing outfit than for Rogers. And the guys on this list already are quite familiar with the brand, so should be no issue. Anyway, I wonder if it could be accomplished using a home printer setup? Seems like printing in a bath would be a challenge; maybe a laser beam is involved? Tom Holmes, N8ZM -----Original Message----- From: Trevor Clarke via mvus-list <mvus-list@lists.febo.com> Sent: Thursday, February 23, 2023 2:09 PM To: Midwest VHF/UHF Society Mailing List <mvus-list@lists.febo.com> Cc: Trevor Clarke <retrev@csh.rit.edu> Subject: [mvus-list] 3d printed microwave antennas Ok, this feels a bit like a Rogers ad but it's really cool tech and the video includes some looks at some of the Rogers calibration fixtures. https://youtu.be/3YMRfw0uWlw Trevor R.H. Clarke Computer Science House Rochester Institute of Technology retrev@csh.rit.edu http://www.csh.rit.edu/~retrev/ _______________________________________________ mvus-list mailing list -- mvus-list@lists.febo.com To unsubscribe send an email to mvus-list-leave@lists.febo.com

yea, it's typically stereo laser sintering (SLS) for this sort of thing which uses UV cured resin with a UV laser. It flash cures the bottom layer of the print volume and pulls the print up and out. You can get very inexpensive home SLS printers (a couple hundred dollars in some cases) but the resin is quite expensive. In this case, Rogers and the printer company have developed some sort of circulation system to keep the suspended particulates evenly distributed in the liquid resin and that, along with the exact makeup of that resin, are the secret sauce. I suspect the printer company just happens to have very customizable production level printers since they seem to specialize in niche resins. I wouldn't be surprised in the printers are 50 to 100k as they are designed for volume production. (that's assuming you could get one of those special Rogers circulators) That said, you might be able to buy some of the resin and make small prints are relatively low frequencies (they seem to support X band and S band currently). You'd have to put it in a rotator for a few hours to ensure it's homogeneous and add a little at a time as the object printed and stick with a pretty small print that wouldn't take 10s of hours. Sounds like a good experiment for someone. Trevor R.H. Clarke Computer Science House Rochester Institute of Technology retrev@csh.rit.edu http://www.csh.rit.edu/~retrev/ On Thu, Feb 23, 2023 at 2:43 PM TomH via mvus-list <mvus-list@lists.febo.com> wrote: > HI Trevor... > > Thanks for that. It is really fantastic what he has done, and it's more of > an ad for the 3D printing outfit than for Rogers. > And the guys on this list already are quite familiar with the brand, so > should be no issue. > > Anyway, I wonder if it could be accomplished using a home printer setup? > Seems like printing in a bath would be a challenge; > maybe a laser beam is involved? > > Tom Holmes, N8ZM > > -----Original Message----- > From: Trevor Clarke via mvus-list <mvus-list@lists.febo.com> > Sent: Thursday, February 23, 2023 2:09 PM > To: Midwest VHF/UHF Society Mailing List <mvus-list@lists.febo.com> > Cc: Trevor Clarke <retrev@csh.rit.edu> > Subject: [mvus-list] 3d printed microwave antennas > > Ok, this feels a bit like a Rogers ad but it's really cool tech and the > video includes some looks at some of the Rogers calibration fixtures. > > https://youtu.be/3YMRfw0uWlw > > Trevor R.H. Clarke > Computer Science House > Rochester Institute of Technology > retrev@csh.rit.edu > http://www.csh.rit.edu/~retrev/ > _______________________________________________ > mvus-list mailing list -- mvus-list@lists.febo.com > To unsubscribe send an email to mvus-list-leave@lists.febo.com > > _______________________________________________ > mvus-list mailing list -- mvus-list@lists.febo.com > To unsubscribe send an email to mvus-list-leave@lists.febo.com >

So I did a little looking. The inexpensive printer I was thinking of is a bit more expensive now but still affordable and supposedly has decent resolution and repeatability. https://www.aliexpress.us/item/2251832735673766.html You can buy the Rogers Radix resis. It's $1800 a liter so I don't expect I'll be running this experiment any time soon. https://shop.3dfortify.com/products/radix%E2%84%A2-printable-dielectric-resin Trevor R.H. Clarke Computer Science House Rochester Institute of Technology retrev@csh.rit.edu http://www.csh.rit.edu/~retrev/ On Thu, Feb 23, 2023 at 3:00 PM Trevor Clarke <retrev@csh.rit.edu> wrote: > yea, it's typically stereo laser sintering (SLS) for this sort of thing > which uses UV cured resin with a UV laser. It flash cures the bottom layer > of the print volume and pulls the print up and out. You can get very > inexpensive home SLS printers (a couple hundred dollars in some cases) but > the resin is quite expensive. In this case, Rogers and the printer company > have developed some sort of circulation system to keep the suspended > particulates evenly distributed in the liquid resin and that, along with > the exact makeup of that resin, are the secret sauce. I suspect the printer > company just happens to have very customizable production level printers > since they seem to specialize in niche resins. I wouldn't be surprised in > the printers are 50 to 100k as they are designed for volume production. > (that's assuming you could get one of those special Rogers circulators) > > That said, you might be able to buy some of the resin and make small > prints are relatively low frequencies (they seem to support X band and S > band currently). You'd have to put it in a rotator for a few hours to > ensure it's homogeneous and add a little at a time as the object printed > and stick with a pretty small print that wouldn't take 10s of hours. Sounds > like a good experiment for someone. > > Trevor R.H. Clarke > Computer Science House > Rochester Institute of Technology > retrev@csh.rit.edu > http://www.csh.rit.edu/~retrev/ > > > On Thu, Feb 23, 2023 at 2:43 PM TomH via mvus-list < > mvus-list@lists.febo.com> wrote: > >> HI Trevor... >> >> Thanks for that. It is really fantastic what he has done, and it's more >> of an ad for the 3D printing outfit than for Rogers. >> And the guys on this list already are quite familiar with the brand, so >> should be no issue. >> >> Anyway, I wonder if it could be accomplished using a home printer setup? >> Seems like printing in a bath would be a challenge; >> maybe a laser beam is involved? >> >> Tom Holmes, N8ZM >> >> -----Original Message----- >> From: Trevor Clarke via mvus-list <mvus-list@lists.febo.com> >> Sent: Thursday, February 23, 2023 2:09 PM >> To: Midwest VHF/UHF Society Mailing List <mvus-list@lists.febo.com> >> Cc: Trevor Clarke <retrev@csh.rit.edu> >> Subject: [mvus-list] 3d printed microwave antennas >> >> Ok, this feels a bit like a Rogers ad but it's really cool tech and the >> video includes some looks at some of the Rogers calibration fixtures. >> >> https://youtu.be/3YMRfw0uWlw >> >> Trevor R.H. Clarke >> Computer Science House >> Rochester Institute of Technology >> retrev@csh.rit.edu >> http://www.csh.rit.edu/~retrev/ >> _______________________________________________ >> mvus-list mailing list -- mvus-list@lists.febo.com >> To unsubscribe send an email to mvus-list-leave@lists.febo.com >> >> _______________________________________________ >> mvus-list mailing list -- mvus-list@lists.febo.com >> To unsubscribe send an email to mvus-list-leave@lists.febo.com >> >

They do have all of the components including the 3D printer available on their website. The printer page is password protected so I suspect you need an NDA or something. They do list the price however, $185k with the Rogers special sauce included. Not terribly more than the same model without the Rogers system ($165k) so if you were a business looking to sell microwave 3d printing services, an RF contractor, etc. it's not a horrible cost of ownership. Trevor R.H. Clarke Computer Science House Rochester Institute of Technology retrev@csh.rit.edu http://www.csh.rit.edu/~retrev/ On Thu, Feb 23, 2023 at 3:03 PM Trevor Clarke <retrev@csh.rit.edu> wrote: > So I did a little looking. The inexpensive printer I was thinking of is a > bit more expensive now but still affordable and supposedly has decent > resolution and repeatability. > https://www.aliexpress.us/item/2251832735673766.html > > You can buy the Rogers Radix resis. It's $1800 a liter so I don't expect > I'll be running this experiment any time soon. > https://shop.3dfortify.com/products/radix%E2%84%A2-printable-dielectric-resin > > Trevor R.H. Clarke > Computer Science House > Rochester Institute of Technology > retrev@csh.rit.edu > http://www.csh.rit.edu/~retrev/ > > > On Thu, Feb 23, 2023 at 3:00 PM Trevor Clarke <retrev@csh.rit.edu> wrote: > >> yea, it's typically stereo laser sintering (SLS) for this sort of thing >> which uses UV cured resin with a UV laser. It flash cures the bottom layer >> of the print volume and pulls the print up and out. You can get very >> inexpensive home SLS printers (a couple hundred dollars in some cases) but >> the resin is quite expensive. In this case, Rogers and the printer company >> have developed some sort of circulation system to keep the suspended >> particulates evenly distributed in the liquid resin and that, along with >> the exact makeup of that resin, are the secret sauce. I suspect the printer >> company just happens to have very customizable production level printers >> since they seem to specialize in niche resins. I wouldn't be surprised in >> the printers are 50 to 100k as they are designed for volume production. >> (that's assuming you could get one of those special Rogers circulators) >> >> That said, you might be able to buy some of the resin and make small >> prints are relatively low frequencies (they seem to support X band and S >> band currently). You'd have to put it in a rotator for a few hours to >> ensure it's homogeneous and add a little at a time as the object printed >> and stick with a pretty small print that wouldn't take 10s of hours. Sounds >> like a good experiment for someone. >> >> Trevor R.H. Clarke >> Computer Science House >> Rochester Institute of Technology >> retrev@csh.rit.edu >> http://www.csh.rit.edu/~retrev/ >> >> >> On Thu, Feb 23, 2023 at 2:43 PM TomH via mvus-list < >> mvus-list@lists.febo.com> wrote: >> >>> HI Trevor... >>> >>> Thanks for that. It is really fantastic what he has done, and it's more >>> of an ad for the 3D printing outfit than for Rogers. >>> And the guys on this list already are quite familiar with the brand, so >>> should be no issue. >>> >>> Anyway, I wonder if it could be accomplished using a home printer setup? >>> Seems like printing in a bath would be a challenge; >>> maybe a laser beam is involved? >>> >>> Tom Holmes, N8ZM >>> >>> -----Original Message----- >>> From: Trevor Clarke via mvus-list <mvus-list@lists.febo.com> >>> Sent: Thursday, February 23, 2023 2:09 PM >>> To: Midwest VHF/UHF Society Mailing List <mvus-list@lists.febo.com> >>> Cc: Trevor Clarke <retrev@csh.rit.edu> >>> Subject: [mvus-list] 3d printed microwave antennas >>> >>> Ok, this feels a bit like a Rogers ad but it's really cool tech and the >>> video includes some looks at some of the Rogers calibration fixtures. >>> >>> https://youtu.be/3YMRfw0uWlw >>> >>> Trevor R.H. Clarke >>> Computer Science House >>> Rochester Institute of Technology >>> retrev@csh.rit.edu >>> http://www.csh.rit.edu/~retrev/ >>> _______________________________________________ >>> mvus-list mailing list -- mvus-list@lists.febo.com >>> To unsubscribe send an email to mvus-list-leave@lists.febo.com >>> >>> _______________________________________________ >>> mvus-list mailing list -- mvus-list@lists.febo.com >>> To unsubscribe send an email to mvus-list-leave@lists.febo.com >>> >>

That printer doesn't appear to be a bath type like in the YT video, but I could easily be uninformed on that. It is pretty inexpensive, though. I got the impression the part in the video was actually printed submerged, because I thought I saw it being removed from under the liquid level. That was partly why there were so many cleaning steps. Tom Holmes, N8ZM -----Original Message----- From: Trevor Clarke via mvus-list <mvus-list@lists.febo.com> Sent: Thursday, February 23, 2023 3:03 PM To: Midwest VHF/UHF Society Mailing List <mvus-list@lists.febo.com> Cc: Trevor Clarke <retrev@csh.rit.edu> Subject: [mvus-list] Re: 3d printed microwave antennas So I did a little looking. The inexpensive printer I was thinking of is a bit more expensive now but still affordable and supposedly has decent resolution and repeatability. https://www.aliexpress.us/item/2251832735673766.html You can buy the Rogers Radix resis. It's $1800 a liter so I don't expect I'll be running this experiment any time soon. https://shop.3dfortify.com/products/radix%E2%84%A2-printable-dielectric-resin Trevor R.H. Clarke Computer Science House Rochester Institute of Technology retrev@csh.rit.edu http://www.csh.rit.edu/~retrev/ On Thu, Feb 23, 2023 at 3:00 PM Trevor Clarke <retrev@csh.rit.edu> wrote: > yea, it's typically stereo laser sintering (SLS) for this sort of thing > which uses UV cured resin with a UV laser. It flash cures the bottom layer > of the print volume and pulls the print up and out. You can get very > inexpensive home SLS printers (a couple hundred dollars in some cases) but > the resin is quite expensive. In this case, Rogers and the printer company > have developed some sort of circulation system to keep the suspended > particulates evenly distributed in the liquid resin and that, along with > the exact makeup of that resin, are the secret sauce. I suspect the printer > company just happens to have very customizable production level printers > since they seem to specialize in niche resins. I wouldn't be surprised in > the printers are 50 to 100k as they are designed for volume production. > (that's assuming you could get one of those special Rogers circulators) > > That said, you might be able to buy some of the resin and make small > prints are relatively low frequencies (they seem to support X band and S > band currently). You'd have to put it in a rotator for a few hours to > ensure it's homogeneous and add a little at a time as the object printed > and stick with a pretty small print that wouldn't take 10s of hours. Sounds > like a good experiment for someone. > > Trevor R.H. Clarke > Computer Science House > Rochester Institute of Technology > retrev@csh.rit.edu > http://www.csh.rit.edu/~retrev/ > > > On Thu, Feb 23, 2023 at 2:43 PM TomH via mvus-list < > mvus-list@lists.febo.com> wrote: > >> HI Trevor... >> >> Thanks for that. It is really fantastic what he has done, and it's more >> of an ad for the 3D printing outfit than for Rogers. >> And the guys on this list already are quite familiar with the brand, so >> should be no issue. >> >> Anyway, I wonder if it could be accomplished using a home printer setup? >> Seems like printing in a bath would be a challenge; >> maybe a laser beam is involved? >> >> Tom Holmes, N8ZM >> >> -----Original Message----- >> From: Trevor Clarke via mvus-list <mvus-list@lists.febo.com> >> Sent: Thursday, February 23, 2023 2:09 PM >> To: Midwest VHF/UHF Society Mailing List <mvus-list@lists.febo.com> >> Cc: Trevor Clarke <retrev@csh.rit.edu> >> Subject: [mvus-list] 3d printed microwave antennas >> >> Ok, this feels a bit like a Rogers ad but it's really cool tech and the >> video includes some looks at some of the Rogers calibration fixtures. >> >> https://youtu.be/3YMRfw0uWlw >> >> Trevor R.H. Clarke >> Computer Science House >> Rochester Institute of Technology >> retrev@csh.rit.edu >> http://www.csh.rit.edu/~retrev/ >> _______________________________________________ >> mvus-list mailing list -- mvus-list@lists.febo.com >> To unsubscribe send an email to mvus-list-leave@lists.febo.com >> >> _______________________________________________ >> mvus-list mailing list -- mvus-list@lists.febo.com >> To unsubscribe send an email to mvus-list-leave@lists.febo.com >> > _______________________________________________ mvus-list mailing list -- mvus-list@lists.febo.com To unsubscribe send an email to mvus-list-leave@lists.febo.com

Yeah, could probably pay for it fairly quickly, although chasing the technology improvements over time could be a risk factor if not sufficiently funded or technically adept. Certainly cold be viable for small volume runs. Tom Holmes, N8ZM -----Original Message----- From: Trevor Clarke via mvus-list <mvus-list@lists.febo.com> Sent: Thursday, February 23, 2023 3:08 PM To: Midwest VHF/UHF Society Mailing List <mvus-list@lists.febo.com> Cc: Trevor Clarke <retrev@csh.rit.edu> Subject: [mvus-list] Re: 3d printed microwave antennas They do have all of the components including the 3D printer available on their website. The printer page is password protected so I suspect you need an NDA or something. They do list the price however, $185k with the Rogers special sauce included. Not terribly more than the same model without the Rogers system ($165k) so if you were a business looking to sell microwave 3d printing services, an RF contractor, etc. it's not a horrible cost of ownership. Trevor R.H. Clarke Computer Science House Rochester Institute of Technology retrev@csh.rit.edu http://www.csh.rit.edu/~retrev/ On Thu, Feb 23, 2023 at 3:03 PM Trevor Clarke <retrev@csh.rit.edu> wrote: > So I did a little looking. The inexpensive printer I was thinking of is a > bit more expensive now but still affordable and supposedly has decent > resolution and repeatability. > https://www.aliexpress.us/item/2251832735673766.html > > You can buy the Rogers Radix resis. It's $1800 a liter so I don't expect > I'll be running this experiment any time soon. > https://shop.3dfortify.com/products/radix%E2%84%A2-printable-dielectric-resin > > Trevor R.H. Clarke > Computer Science House > Rochester Institute of Technology > retrev@csh.rit.edu > http://www.csh.rit.edu/~retrev/ > > > On Thu, Feb 23, 2023 at 3:00 PM Trevor Clarke <retrev@csh.rit.edu> wrote: > >> yea, it's typically stereo laser sintering (SLS) for this sort of thing >> which uses UV cured resin with a UV laser. It flash cures the bottom layer >> of the print volume and pulls the print up and out. You can get very >> inexpensive home SLS printers (a couple hundred dollars in some cases) but >> the resin is quite expensive. In this case, Rogers and the printer company >> have developed some sort of circulation system to keep the suspended >> particulates evenly distributed in the liquid resin and that, along with >> the exact makeup of that resin, are the secret sauce. I suspect the printer >> company just happens to have very customizable production level printers >> since they seem to specialize in niche resins. I wouldn't be surprised in >> the printers are 50 to 100k as they are designed for volume production. >> (that's assuming you could get one of those special Rogers circulators) >> >> That said, you might be able to buy some of the resin and make small >> prints are relatively low frequencies (they seem to support X band and S >> band currently). You'd have to put it in a rotator for a few hours to >> ensure it's homogeneous and add a little at a time as the object printed >> and stick with a pretty small print that wouldn't take 10s of hours. Sounds >> like a good experiment for someone. >> >> Trevor R.H. Clarke >> Computer Science House >> Rochester Institute of Technology >> retrev@csh.rit.edu >> http://www.csh.rit.edu/~retrev/ >> >> >> On Thu, Feb 23, 2023 at 2:43 PM TomH via mvus-list < >> mvus-list@lists.febo.com> wrote: >> >>> HI Trevor... >>> >>> Thanks for that. It is really fantastic what he has done, and it's more >>> of an ad for the 3D printing outfit than for Rogers. >>> And the guys on this list already are quite familiar with the brand, so >>> should be no issue. >>> >>> Anyway, I wonder if it could be accomplished using a home printer setup? >>> Seems like printing in a bath would be a challenge; >>> maybe a laser beam is involved? >>> >>> Tom Holmes, N8ZM >>> >>> -----Original Message----- >>> From: Trevor Clarke via mvus-list <mvus-list@lists.febo.com> >>> Sent: Thursday, February 23, 2023 2:09 PM >>> To: Midwest VHF/UHF Society Mailing List <mvus-list@lists.febo.com> >>> Cc: Trevor Clarke <retrev@csh.rit.edu> >>> Subject: [mvus-list] 3d printed microwave antennas >>> >>> Ok, this feels a bit like a Rogers ad but it's really cool tech and the >>> video includes some looks at some of the Rogers calibration fixtures. >>> >>> https://youtu.be/3YMRfw0uWlw >>> >>> Trevor R.H. Clarke >>> Computer Science House >>> Rochester Institute of Technology >>> retrev@csh.rit.edu >>> http://www.csh.rit.edu/~retrev/ >>> _______________________________________________ >>> mvus-list mailing list -- mvus-list@lists.febo.com >>> To unsubscribe send an email to mvus-list-leave@lists.febo.com >>> >>> _______________________________________________ >>> mvus-list mailing list -- mvus-list@lists.febo.com >>> To unsubscribe send an email to mvus-list-leave@lists.febo.com >>> >> _______________________________________________ mvus-list mailing list -- mvus-list@lists.febo.com To unsubscribe send an email to mvus-list-leave@lists.febo.com

Trevor, I have made 10 GHz 3D printed standard gain horns using a conventional fused deposition modelling (FDM) printer. Material was ABS. After printing, the ridges from the FDM process on each layer had to be smoothed out. I used an epoxy coating designed for 3D prints. Used as a "pretty maker" to smooth the prints plus a little sanding. Then applied a conductive coating. At 10-GHz a silver conductive paint must be used, not zinc. Of the three I made one passed specification on return loss and gain. The quickest way to check the performance is to look at the Return Loss by placing a metal plate directly on the end of the open horn. Return loss should be near zero. If more than about a few DB something is wrong. The two I made that did not pass we think was because the corners inside the horn need to be sharp 90-degrees. Mine were rounded from using too much of the epoxy coating. I never attempted to fix them. Material used: Silver conductive coating: MG Chemicals "Super Shield Silver Coated Copper Conductive Coating" 3D epoxy coating: "XTC-3D High Performance 3D Print Coating" Mike W8RKO On Thu, Feb 23, 2023 at 3:21 PM TomH via mvus-list <mvus-list@lists.febo.com> wrote: > Yeah, could probably pay for it fairly quickly, although chasing the > technology improvements over time could be a risk factor > if not sufficiently funded or technically adept. Certainly cold be viable > for small volume runs. > > Tom Holmes, N8ZM > > -----Original Message----- > From: Trevor Clarke via mvus-list <mvus-list@lists.febo.com> > Sent: Thursday, February 23, 2023 3:08 PM > To: Midwest VHF/UHF Society Mailing List <mvus-list@lists.febo.com> > Cc: Trevor Clarke <retrev@csh.rit.edu> > Subject: [mvus-list] Re: 3d printed microwave antennas > > They do have all of the components including the 3D printer available on > their website. The printer page is password protected so I suspect you need > an NDA or something. They do list the price however, $185k with the Rogers > special sauce included. Not terribly more than the same model without the > Rogers system ($165k) so if you were a business looking to sell microwave > 3d printing services, an RF contractor, etc. it's not a horrible cost of > ownership. > > Trevor R.H. Clarke > Computer Science House > Rochester Institute of Technology > retrev@csh.rit.edu > http://www.csh.rit.edu/~retrev/ > > > On Thu, Feb 23, 2023 at 3:03 PM Trevor Clarke <retrev@csh.rit.edu> wrote: > > > So I did a little looking. The inexpensive printer I was thinking of is a > > bit more expensive now but still affordable and supposedly has decent > > resolution and repeatability. > > https://www.aliexpress.us/item/2251832735673766.html > > > > You can buy the Rogers Radix resis. It's $1800 a liter so I don't expect > > I'll be running this experiment any time soon. > > > https://shop.3dfortify.com/products/radix%E2%84%A2-printable-dielectric-resin > > > > Trevor R.H. Clarke > > Computer Science House > > Rochester Institute of Technology > > retrev@csh.rit.edu > > http://www.csh.rit.edu/~retrev/ > > > > > > On Thu, Feb 23, 2023 at 3:00 PM Trevor Clarke <retrev@csh.rit.edu> > wrote: > > > >> yea, it's typically stereo laser sintering (SLS) for this sort of thing > >> which uses UV cured resin with a UV laser. It flash cures the bottom > layer > >> of the print volume and pulls the print up and out. You can get very > >> inexpensive home SLS printers (a couple hundred dollars in some cases) > but > >> the resin is quite expensive. In this case, Rogers and the printer > company > >> have developed some sort of circulation system to keep the suspended > >> particulates evenly distributed in the liquid resin and that, along with > >> the exact makeup of that resin, are the secret sauce. I suspect the > printer > >> company just happens to have very customizable production level printers > >> since they seem to specialize in niche resins. I wouldn't be surprised > in > >> the printers are 50 to 100k as they are designed for volume production. > >> (that's assuming you could get one of those special Rogers circulators) > >> > >> That said, you might be able to buy some of the resin and make small > >> prints are relatively low frequencies (they seem to support X band and S > >> band currently). You'd have to put it in a rotator for a few hours to > >> ensure it's homogeneous and add a little at a time as the object printed > >> and stick with a pretty small print that wouldn't take 10s of hours. > Sounds > >> like a good experiment for someone. > >> > >> Trevor R.H. Clarke > >> Computer Science House > >> Rochester Institute of Technology > >> retrev@csh.rit.edu > >> http://www.csh.rit.edu/~retrev/ > >> > >> > >> On Thu, Feb 23, 2023 at 2:43 PM TomH via mvus-list < > >> mvus-list@lists.febo.com> wrote: > >> > >>> HI Trevor... > >>> > >>> Thanks for that. It is really fantastic what he has done, and it's more > >>> of an ad for the 3D printing outfit than for Rogers. > >>> And the guys on this list already are quite familiar with the brand, so > >>> should be no issue. > >>> > >>> Anyway, I wonder if it could be accomplished using a home printer > setup? > >>> Seems like printing in a bath would be a challenge; > >>> maybe a laser beam is involved? > >>> > >>> Tom Holmes, N8ZM > >>> > >>> -----Original Message----- > >>> From: Trevor Clarke via mvus-list <mvus-list@lists.febo.com> > >>> Sent: Thursday, February 23, 2023 2:09 PM > >>> To: Midwest VHF/UHF Society Mailing List <mvus-list@lists.febo.com> > >>> Cc: Trevor Clarke <retrev@csh.rit.edu> > >>> Subject: [mvus-list] 3d printed microwave antennas > >>> > >>> Ok, this feels a bit like a Rogers ad but it's really cool tech and the > >>> video includes some looks at some of the Rogers calibration fixtures. > >>> > >>> https://youtu.be/3YMRfw0uWlw > >>> > >>> Trevor R.H. Clarke > >>> Computer Science House > >>> Rochester Institute of Technology > >>> retrev@csh.rit.edu > >>> http://www.csh.rit.edu/~retrev/ > >>> _______________________________________________ > >>> mvus-list mailing list -- mvus-list@lists.febo.com > >>> To unsubscribe send an email to mvus-list-leave@lists.febo.com > >>> > >>> _______________________________________________ > >>> mvus-list mailing list -- mvus-list@lists.febo.com > >>> To unsubscribe send an email to mvus-list-leave@lists.febo.com > >>> > >> > _______________________________________________ > mvus-list mailing list -- mvus-list@lists.febo.com > To unsubscribe send an email to mvus-list-leave@lists.febo.com > > _______________________________________________ > mvus-list mailing list -- mvus-list@lists.febo.com > To unsubscribe send an email to mvus-list-leave@lists.febo.com >