I bought a new ACER 3VS 9x49 recently, and fabricated this collet rack yesterday. It bolts to the turret bolts at the top of the column. The old Bridgeport I sold had a similar one that I liked a lot so I fabricated a new one with some extra space for accessories.
I drew it up in Autocad, printed it out actual size, taped it to 1/4inch thick aluminum plate, screwed that to 3/4inch MDF, and center punched the centers of all the holes.
Below is after boring all the holes with Hougen annular cutters. I haven't yet 'transplanted" the DRO yet because my new longer scale for the X-axis hasn't arrived yet, so I used a combination of using the hand wheels (near zero backlash) and eyeballing the center punches.
After cutting out the form on the bandsaw.
Deburred, and scotch brighted. The small 4-bolt pattern is for the base of a halogen lamp.
On the job.
Another view,
I drew it up in Autocad, printed it out actual size, taped it to 1/4inch thick aluminum plate, screwed that to 3/4inch MDF, and center punched the centers of all the holes.
Below is after boring all the holes with Hougen annular cutters. I haven't yet 'transplanted" the DRO yet because my new longer scale for the X-axis hasn't arrived yet, so I used a combination of using the hand wheels (near zero backlash) and eyeballing the center punches.
After cutting out the form on the bandsaw.
Deburred, and scotch brighted. The small 4-bolt pattern is for the base of a halogen lamp.
On the job.
Another view,
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