What materials are safe in a microwave?

[camerart]

Hi,
I am carrying out some tests using the laser image transfer method, where the image of a circuit is put on a PCB as an acid resist, so leaving the circuit in copper. My thread PCB by Laser transfer.

My method is a 'sandwich' of two stiff plates app 110x160mm bolted at the edges. PLATE-SILICON SHEET-IMAGE-PCB-IMAGE-SILICON-PLATE. The plates need to compress the silicon enough to give even pressure to the image, and be able to withstand heat up to perhaps 250C.

I am trying different methods of heating, this time I want to test microwaves. I've tried it with plastic and rubber bands, the band snapped and the plastic melted, but it worked. So now I need a better approach. (No metal)
Any suggestions, for materials for this. Obviously I don't want dangerous fumes.
Camerart.

 

[sophiecentaur]

Glass? Too hot perhaps. No - just looked it up. 550 celsius for cheap glass.

 

[camerart]

Glass? Too hot perhaps. No - just looked it up. 550 celsius for cheap glass.

Hi S,
Glass is a possibility, although for clamping it would be better to have a material that could be drilled. I know Pyrex is oven proof, but I'm not sure about plate glass or house glass/
C.

 

[sophiecentaur]

Glass is drillable if you get the right stuff. Contact a supplier? Tell them your requirements.

 

[camerart]

Glass is drillable if you get the right stuff. Contact a supplier? Tell them your requirements.

Hi S,
I had just looking up diamond glass drills, then I got the idea of terracotta tiles.
Guess what I was cutting yesterday? A/Terracotta tiles. I'll test these out first.
Thanks, C.

 

[sophiecentaur]

Cheap too!

 

[marcusl]

Wait, you're putting metalized board material in your microwave? Bad for the oven on two scores: first, metal in a microwave (no-no), second no absorptive material (empty ovens are also a no-no).

 

[camerart]

Wait, you're putting metalized board material in your microwave? Bad for the oven on two scores: first, metal in a microwave (no-no), second no absorptive material (empty ovens are also a no-no).

Hi M,
Ok, that answers my question, thanks.
Microwave idea gone!
C.