Heated Parts of a SLS Printer
Dominik Meffert wrote 07/22/2020 at 14:03 • 0 pointsAt the moment I'm collecting infos for building a SLS 3D printer and I think the most complicated part to build will be the heaters for the powder and the heat resistant chamber.
I saw on eg. the Sinterit Lisa that the powder is heated from the top with IR lights which I think will be easy to realize.
But they write the pistons and cylinder is also heated which I think could be a bit complicated. (For heated pistons I could maybe use high power silicone heat pads.)
Now my question:
Is a heated cylinder necessary or would the IR heater + Heated build bottom be enough?
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SLS powder is very touchy if you don't want warping issues/ orange peel. In that case a heated cylinder is necessary. Another thing to note is when the powder is heated just below melting temperature, the powder will oxidize if you don't fill the chamber with nitrogen gas. I think that oxidization might be your biggest issue to overcome.
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Hi,
thank you very much for the reply.
I'm planning to work with inert gas chambers in my current project (https://hackaday.io/project/174408-arc-welding-powder-printing-proof-of-concept) for getting started with the topic.
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