Re: CNC upgrade, need advice
Some machines have linear rails on the side, others on top, I guess there are advantages and disadvantages both ways. On the side is likely better for stopping chips getting onto the rails, but seeing that you don't seem to have any cross braces in your bed I'd personally be worried about the extrusions down each side twisting. If it were me I'd also go for something rather thicker than 4mm for those side plates and likely add a vertical stiffening piece as well. In machines, rigidity is so important.
Re: CNC upgrade, need advice
I have find is not gone fit on side, but i have rise up the steel gear and will go from here,
Have made new part from 6mm mdf to check where is can be problem.
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Re: CNC upgrade, need advice
Looking good so far, any updates ?