New Barrel Time

[Dave Hoback]

Well, it’s nary a new dealing for me. I’ve surfaced countless blades & other metal objects, and never had one remove itself from the chuck. The Magnets used are are N52 Neodymium bars. Each magnet strip is 10mmX60mm & 5mm thick and can hold like 40lbs each. The chuck uses 11 of these magnets! Pulling anything from the chuck is impossible in a straight pull. Objects must be slide off to break the tension. I decided to make a jig. I started today, machined a steel flat roughly square at about 1.710”x 1.690”. Also machined two 1/4” thick aluminum bars to serve as uprights on either side. These will be drilled & screwed to either side of the 1.710” length via 4mm cap screws. The steel I used is just over 1/4”, so 4mm threaded holes will work nicely. Would have rather used 3mm, but I happen to have several 4mm Allen cap screws, so… meh.

[charlie b]

That's the problem, isn't it. Sliding of the workpiece. Which is what the grinding wheel/belt is trying to do to it.

Sounds like you have it under control.