Cutting silpoly

[cmahoney]

Do any of you guys have experience cutting silpoly with a hot knife?


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[WoodBow]

I have used a soldering iron with a chisel shaped point. Works like a champ.

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[cmahoney]

I have used a soldering iron with a chisel shaped point. Works like a champ.

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Good to hear. Did the edges come out clean with no fraying? If I can avoid spending $70 on a hot knife that would be awesome. I am considering attaching a havalon blade to a soldering iron too.


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[WoodBow]

Good to hear. Did the edges come out clean with no fraying? If I can avoid spending $70 on a hot knife that would be awesome. I am considering attaching a havalon blade to a soldering iron too.


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Yep. Im not sure the havalon blade will work but it's worth a shot. The issue is that I believe soldering iron tips are made of copper (for heat conductivity) and then coated in something else to make them more durable. You would need a welded or soldered joint for good heat transfer, and even then I dont feel like it will transfer heat well to the tip. You should be able to buy tips specifically designed cutting fabric

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[cmahoney]

Thanks man, I’m going to order this for $10 instead of messing with my crusty old soldering iron. Comes with a knife edge.

https://a.co/d/7FNnQ4Q

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[TaperPin]

Do any of you guys have experience cutting silpoly with a hot knife?


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On Amazon searching for “knife point soldering tip” will turn up a lot of options for cheap.

 

[nnmarcher]

I use regular sewing scissors and a rotary cutter for cutting silpoly. I don't normally leave raw edges anywhere, but I haven't noticed excessive fraying compared with my hot knife.