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| Thread ID: 116614 | 2011-03-12 07:51:00 | Building a CNC Router | The Error Guy (14052) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1185523 | 2011-03-12 07:51:00 | Just thought i'd build a small CNC router... just because really. i'll get around to programming it later, 1st I plan on building it. looking at several designs. not too fussed on it really. more like a "can I actually build it project" 1st off Stepping motors: Proper CNC motors cost a lot more $$ than I really have. would old electronic typewriter or scanner steppers be ok? Cutting tool: possible to use an old drill (busted battery) on a 18v rail to do the business end of cutting etc? mostly i'll be cutting shapes in thin tin or plastic (slow speeds or plastic melts. Maybe some metal/glass/plexi engraving. anyway, interesting to see how it goes. if it works I can actually do some stuff I have been meaning to do for aaages Interested to hear your views on this |
The Error Guy (14052) | ||
| 1185524 | 2011-03-12 22:55:00 | Hi I don't know enough about steppers to give you an diffinative answer, but my gut would be that the ones from typewriters would be too small My guess would be that an 18volt drill will be too slow. Your idea that plastic will melt at fust speeds may be a bit off. My CNC router runs at 20000rpm and the plastic has not melted yet I would say that it is important to use a solid frame as otherwise there will be variation in the part size. I have used one where the whole table including legs and supports were made from wood, and there was change in part size. If you live in Auckland message me. You are welcome to come and look at my professionally built router for ideas |
superoman (6703) | ||
| 1185525 | 2011-03-13 00:04:00 | Have a look in here www.cnczone.com |
Whenu (9358) | ||
| 1185526 | 2011-03-13 02:09:00 | Have a look at Reprap machines they are 3d plastic printers mainly for hobbyist home users, but they use stepper motors | gary67 (56) | ||
| 1185527 | 2011-03-13 02:47:00 | mostly not too worried about part size difference. I don't plan to do anything precision. Mostly shaping plastic + tin I'm guessing superoman's plastic doesn't melt because of quality plastics + tools. The stuff that I have worked tends to go a bit goey and give a bad finish. And i'm wellington not auck so I won't be able to see yours. more proof of concept to myself since I need to get back into programming so this seemed a good idea. I might make a driving circuit for an existing CNC first instead. Also its only going to be small, x30 y 30 z2-5 cm but I might try to get some more powerful steppers |
The Error Guy (14052) | ||
| 1185528 | 2011-03-13 09:11:00 | Plastics I have cut are acrylic/polycarbonate. And yes a sharp cutter is always helpful. I am guessing you have been cutting pvc or styrene. Yes they are not easy to machine If you are wanting to pick the brains of someone, try Router Cut Specialist in seaview. The manufacture routers etc to order, and run a cutting business |
superoman (6703) | ||
| 1185529 | 2011-03-13 09:54:00 | I have got a book here on how to build your own cnc cutter out of wood. :) Link: buildyourcnc.com I been looking at getting 1 myself. Cutting area of round 400x600mm. |
bluezone (12434) | ||
| 1185530 | 2011-03-13 10:49:00 | Have a browse over these links; Could be a bit overkill hackaday.com Not quite a CNC but close enough hackaday.com If you don't mind MDF hackaday.com Quite a few small DIY CNCs that I see usually use parts from old printers, because you get a full rail mounting with a stepper made as one unit. |
ubergeek85 (131) | ||
| 1185531 | 2011-03-14 10:53:00 | Years may wrinkle the skin,buy wow gold (igtto.com/)but to give up enthusiasm wrinkles the soul.cheapest wow gold (http:) Worry, fear, self-distrust bows the heart and turns the spirit buy cheap wow (www.igtto.com) back to dust. | mekar3e (16273) | ||
| 1185532 | 2011-03-14 10:56:00 | Reported | ubergeek85 (131) | ||
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