still not shure if my post is in the right thread , think by the way things are going here 2 threads may be a good idea , for a midlevel design , one for simple construction and one that requires machining of parts ,
my design is almost in the hardware store catogory but seems its to big for there
its a 900mm *500mm *100mm cutting aria design that could be made with minimal tools
and i am working to a budget of £400 (including controls and steppers)
and thats all parts new ,
it would just fit on a table top as the dimentions of the base are 1136mm * 930mm
hmm 47" * 38" approx if my conversion is right
its mainly for working with wood and ply , but trying to build it with enough strenth to mill alluminium also so i have basicaly uprated the Igus design a bit , and some minor changes to make it look a bit better and put the cutting tool more centered on the x axis
as to accuracy well if i can get +-0.5mm from it it would suit my needs but hopefully it will be a lot better than that
with m10 bar i get should get 0.005mm per step with stepers at 1.8deg per step
to darren , sounds like thats going to be one nice machine your making , but from the tools i have to build one from i would need a cnc to make the parts
as to rails i decided to use a steel tube with bearings as runners as this seems to offer good strenth , and easy enough to make ,
i ended up using 20mm staneless bar as it was available from a local suplier , but could use up to 30mm dia bar or tube , depending on the use
sorry about dimentions all being metric for a rough conversion theres 24 mm to 1"  |