![]() Just an FYI, the difference OD between 8mm and 5/16 inch is actually 0.0625 mm, not inches. I always need raw materials for projects. If it doesn't work out its not a big deal. I realize the bar is not specced as a precision shaft and doesn't have straightness spec but I went back through the UK suppliers on the recommended parts list and I noticed that they don't use precision linear shafts either. Oh, and I went with the 1-meter and 3 foot pieces because I didn't want a 7 foot tube sitting on my porch when UPS came to deliver it. On the last item I am evaluating to see if the 5/16" bar works as a substitute for the 8mm stuff. ![]() So far though they look good.ĩ3000A516 - M8 threaded rod, steel, Zinc planted $7.95 eachĩ8861A080 - M8 threaded rod, steel, $2.27 eachĨ888K41 - 5/16" bar, 3 feet length, A2 tool steel, $8.37 each This week I placed an order at McMaster for some parts for another project and, as a test, I ordered some alternatives to the bar and threaded rod parts. Rocket scientists think LIGHTYEARS outside the box! Last edit at 06:28PM by rocket_scientist. It should suck away less heat.Įdited 1 time(s). I think that a short length of stainless steel tubing from a recycling yard would work better than the copper tubing for covering the hot section of the extruder. My work won't allow the full parts list to display. You may still need extra threaded rod/studding, fasteners, and a few other parts. Then add the thernalcouple and secure with a 4th layer of Kapton. Bring the loose end back over the back of the coil and secure with a 3rd layer. Temporarily tape down one end of the wire then coil the rest over the Kapton and secure with a second layer of Kapton. To make up for the wire not being insulated, wrap a layer of Kapton tape around the brass/copper nozzle. ![]() If you intend to make only one extruder and not use nichrome wire for a heated bed, the Makerbot deal is good, but if you need more than 5 feet, bare wire is cheaper. If you want insulated nichrome wire, it is sold by at $5 for 5 feet, or Pelicanwire, which I think has a minimum order of $100. ![]() McMasters only sells uninsulated nichrome wire. 0100" Diameter, 1/8-lb Spool, 403' SpoolĮDIT: Why use UNinsulated nichrome wire? How do you make an extruder nozzle with uninsulated nichrome wire? Solid Thermocouple Wire FEP Insulation, Type K, 24 Gauge Heat Resistant Kapton Tape W/Silicone Adhesive, 1" W, 5 Yards. Heat Resistant Kapton Tape W/Silicone Adhesive, 1/2" W, 5 Yards. I just ordered some extruder parts, so I would recommend adding: That list does not include items for the extruder. This covers the items previously listed from ace hardware and, it seemed a lot easier to just place one order to me.Ħ08-bearing.par each 2ĕ972K501 You still need the stepper motors (good luck, they seem to be almost globally sold out, I believe the 0.9 degree is needed which is much rarer then the 1.8 degree, any one know?) and the small 624ZZ bearings (mcmaster has high end ones for 6.54 each, you can probably find cheapees for 0.75-1.00 at ). NOTE: I have not tested out this list yet but best I can tell it matches the BOM, any feedback is greatly appreciated and I will update it. After pulling my hair out for a couple of hours trying to figure out the preposterously and unnecessarily complex BOM spreadsheet, I created this cut and paste list for the mcmaster carr website, you can just drop it in on the order page by selecting the "paste order" link at the bottom.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |