Emco compact 5 cnc simulator
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Finish by squaring up the slots and to size with a hack saw and file, use the calipers, dividers and lathe to mark out the 3 bolt holes at the correct PCD for attaching it to the spindle. Drill a row of almost intersecting holes in each area those slots will be with a drill press, no DP? then use center punch marks and a hand drill. Bore the spindle recess to size using your previously made gauge. Build a face plate to fit your lathe, step out where you want slots and how many with a pair of dividers set for the chord distance with a pair of dial or digital caliper, use the lathe to scribe the inner and outer ending points of those slots. And if your smart you'll keep it protected and as long as you own the lathe. I'm assuming you don't have a mill with a small rotary table or dividing head? So start out building an EXACT for diameter copy of the spindle nose,that's now your master gauge to use when boring the next item to make the back plate your wanting. But if I didn't have those? A little boot strapping would get you everything you need to both make a new back plate to fit a plain back chuck and mark the PDC of the bolt holes. While I've got 2 of what Emco called heavy duty Compact 5 3 jaw chucks with the reversible jaws, a HD 4 jaw scroll, there 4 jaw independent, and the OEM face plate I sure don't want to sell any.