Bridgeport Manual to CNC conversion...

[V8kid]

Whoa! Have 3 months gone by? After finally getting the house ready for sale it was time for me today to have a bit of time in the man cave and Muzzer was mostly right in that it was easy to bore out the yoke on the faceplate - here a tap and there a little tap and with patience it dialled in spot on. The original Bridgeport acme bush had a 3 thou clearance but I decided to make the ballscrew 1 thou clearance and its a nice snug fit

However I should have read Muzzer's post more carefully as his machine is slightly different to mine and sods law the casting walls on the yoke were thinner on my series1 Bridgeport making the fixing holes problematic.

The X axis was no problem as the casting thickened around the securing flange allowing 3 fixings but the Y axis was iffy. I managed to offset grind one of the ballscrew ( V hard material would not drill) fixing holes and just manage to get 2 off diametrically opposite 6x1mm fixings with a 0.5mm wall thickness on the outside but I held my breath whilst I did it.

Only have stainless fixings in stock so will have to order HT Allen screws before assembling.

Cheers and ta for the pioneering work Muzzer