Recommended filament for PCB compression bracket | Polymaker (3D Printing) | Page 1

sacred trail Jun 10, 2025, 3:10 PM

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Hey guys, im designing a bracket which for its life (several years) will apply a low compression force (maybe 10kg) over the area of about a stick of gum) it needs to be rigid to spread the force evenly. The pcb surface will reach up to 100 degC so it needs to maintain its stiffness at these temperatures. Stress seems to be about <0.5mpa. Without annealing, is there a suitable filament?

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we have the budget for pps cf if needed but feels like overkill. Stresses are low but it will be under continious compression + temperature

tropic cedar Jun 10, 2025, 5:41 PM

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sacred trail we have the budget for pps cf if needed but feels like overkill. Stresses are lo...

PPS won’t hold up for that without annealing anyway. With any of those semicrystalline materials, the unannealed HDT will be the tg

sacred trail Jun 10, 2025, 5:42 PM

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Ok thanks thats helpful.

tropic cedar Jun 10, 2025, 5:44 PM

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sacred trail Ok thanks thats helpful.

What part of the world are you from? That’ll help with recommendations

sacred trail Jun 10, 2025, 5:44 PM

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UK. We do have a pcb reflow oven that we can probably anneal parts if its that effective. Have access to a h2d from bambu

tropic cedar Jun 10, 2025, 5:45 PM

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Gotcha. Is ordering from Europe (specifically Italy) a pain there?

sacred trail Jun 10, 2025, 5:45 PM

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no we can do that

tropic cedar Jun 10, 2025, 5:48 PM

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sacred trail no we can do that

There’s a company called TreeD in Italy that makes really good high-performance materials. Their PC-PBT GF would likely work pretty well for ya

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The website is awful, but the filament is good lol

sacred trail Jun 10, 2025, 5:50 PM

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Thanks, ill take a look

#Recommended filament for PCB compression bracket