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Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Id like to research and begin compiling a list of properties of the 3D printable filaments available. PVC plastic for example can be induction "welded" (fused really) though I don't know of an example of PVC filament. This would show a PVC 3D printed transformer bobbin could melt itself.
So dielectric constant, Volts per mil, temperatures and other physical and chemical properties might be useful to know.
Registered Member #1316
Joined: Thu Feb 14 2008, 03:35AM
Location: Cambridge, MA
Posts: 365
I don't have any measurements but I expect you would have to rather significantly de-rate the breakdown voltage of any FDM printed plastic due to porosity. SLA based resin printers can print with less porosity but its hard to track down electrical data on the resins.
Also, here and in another recent post you referred to induction heating of plastic. Are you talking about dielectric heating? Typically materials have to be conductive for induction heating.
Registered Member #2906
Joined: Sun Jun 06 2010, 02:20AM
Location: Dresden, Germany
Posts: 727
When a student of mine had built a 3-MHz class-E Teslacoil, the 3D-printes (ABS) coil formers melted (not due to hot wire) thats all i can contribute. ABS is far from lossless even at low HF-frequency.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
DerAlbi wrote ...
When a student of mine had built a 3-MHz class-E Teslacoil, the 3D-printes (ABS) coil formers melted (not due to hot wire) thats all i can contribute. ABS is far from lossless even at low HF-frequency.
Yes thats exactly what i mean with plastics like ABS and PVC.
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3D Printing Plastics for Transformers and Other HF Field Generating Devices.
