Possibly a light duty homemade metal lathe C channel is 6mm back wall 10mm top and bottom

Looking to use cnc linear rails but they are really hard to find on aus atm

Will pick up a couple new old stock prescision taper bearings from the USA or UK but unsure on shipping at this time

The lathe will have a 160mm or 200mm chuck just for the extra jaw length

I can use my small lathe to machine a spindle plan will be to have the shaft push thru the chuck side and out the belt side, there will be a correct size for the id of bearing left hand nyloc nut to keep correct bearing tension

Anything i've missed?
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