Hey all. After about 2 years of wanting to do something, I have finally put saw blade to plywood and started a JGRO. I chose this design simply for the fact that with no extra software, I could look at and print dimensioned plans of the machine. also that it's simple and basic for me as a first time builder, and should provide me with required experience and a machine with which to build the next one. For my birthday last year, I nagged the wife into getting me a package of NEMA 23's,breakout board and power supply off of eBay. The intention was to set this up and test run the electronics first. Then our PC tower crashed, chewing a hard drive, and that was the end of that. Most things are done off of the iPad now.
This year I had planned on getting some 3/4 ply to make a start with. The first price of $196.00 for bc grade blew me over so hard it took me a week to consider asking for a second price. Good old Bunnings had 19mm form ply on sale. Went to our local..... Out of stock, on order! But I consider plywood significantly stronger than plain 19mm Mdf, so I saved even more and am using 15mm ply. Still heaps of strength but I just have to check the measurements a few times, with the conversion from decimal imperial to metric, then adjusted to 15 thickness. Will still end up using 9 or 12mm for the base unit and cutting face.
Anyway here are a few pics of the build so far. Will be mostly standard, adjusted to metric of course. I may try the anti backlash designas is, but am considering acme screw or similar for the 3 drives. I also want to put side walls on the x axis and put in supports in the intermediate areas of the unit to reduce flex.
Any questions or assistance, inbox me or reply.