Quotevreihen Whatever you do, stay away from the Nest wifi units. The reviews on Amazon say that they have serious problems with both false alarms and not alarming during actual fires..... Sounds like this xkcd reviewby tray - Safety & Best Practices
Seems like mounting a smoke detector near the printer is a good idea. The two major groups are photoelectric and ionization. Has anyone looked into which type is better for this use, in terms of both sensitivity and false alarms? Does it differ for ABS vs PLA vs Nylon? I haven't tried burning any of them. Or a printer.by tray - Safety & Best Practices
Since most people don't want to permanently deform their parts in normal operation, yield strength is usually a better starting point than UTS for comparison. Another consideration is that nylon is quite a bit more stretchy than steel, so modulus of elasticity (MOE) is important to consider. (Ever use a cheap plastic hanger that cheerfully popped back into shape after dropping your coat on the flby tray - General
QuoteOhmarinus Should be usable, but Delrin is softer and won't eat your aluminum extrusions as much. I expect the hardened steel bearing-rim of the 625VV to wear the extrusion way faster. Perhaps a strip of delrin inserted in the extrusion might solve the wear issue, but you might have to machine it to fit & be flat.by tray - General
Could you please post a diagram of your cold end? I'm unclear whether the contact area is at a pinch roller (if so, what size?) or the drive wheel presses the filament against the housing, or what. If you're interested in more widespread adoption of your drive, diagrams with measurements and part numbers would help people reuse your idea without having to redevelop it. Thanks.by tray - Mechanics
Chris Lau's 3DPrintMi is pretty inexpensive. I haven't built one, but I saw one printing respectable parts at a reprap gathering. He's been working on getting the BOM down in price and blogs that he built one in January for <$240. (Not including printed parts).by tray - Reprappers
Natureworks, for their Ingeo polylactides, doesn't seem to be too concerned about storage moisture levels, just moisture during the melt phase, so just drying should it be fine. It's great that the material degradation doesn't affect ShawnT98027's setup & material property needs. Yours may be different. (PLA manufacturers seem to be more particular than some users, but they service a wide ranby tray - General
Has anyone looked into cutting down an old ceramic cooktop as a printer bed? The glass-ceramic material has near zero CTE, so it won't warp or shatter from heating, and there's a free, eco-friendly supply of large pieces from junked stoves. Any idea if the underside is flat, or how difficult it is to cut? Thanks.by tray - General
Depends how far "out there" you'd like to go for compactness. If you know coaxially drivan Scara layouts, like the Reprap Morgan, the head can reach everywhere in a 360 degree area except near/over the origin. Sort of doughnut shaped. This limits the useful area to one side of the scara. (unless you happen to be building doughnuts ). However, the sketch below shows a mod that removes that restriby tray - Mechanics