CNC Plasma Table

[f350ca]

Im cutting a 1/2 - 10 tpi acme thread that will elevate the torch. When I ground the cutter I got the tip width a little wide, closer to the width required for 9 tpi. According to the thread gauge I have. As a result at .055 inch thread depth (rather than .060) the pitch dia came into tolerance by the 3 wire method. Will that be a problem when I try to make the nut. Not sure if I'll make a tap or try to single point the nut.



If I drill the pilot hole for the female thread 10 thou over will that correct the shallower root on the male thread?

[stevec]

It's too late but I would have made the screw longer and used the extra to make a tap.

[f350ca]

Thought about that Steve but the stock was right on .5 and figured you'd want the OD of the tap slightly over to get clearance. Ended up grinding a 1/8 cutter with plans of single point threading the nut.

[f350ca]

Getting the carriage(?) that carries the torch put together.

[f350ca]

Made up the torch mount and cut the recess in the slide for the acme nut to engage it.

[stevec]

Greg, I'm getting excited and looking forward to the obligatory video of it in operation.

[EdK]

[f350ca]

Have the gantry pretty much together. Still need axles for the stepper brackets and stops with limit switches for the side movement. Will try and get a weight tomorrow, surprising how the weight adds up.

[EdK]

Very nice Greg! It's coming along well.

Ed

[f350ca]

Thanks Ed, guess most of the machining is done, next will be welding up the table. Have some scrap square and rectangular tubing that looks like it could be repurposed.