0. Insure you're using the correct size screwdriver. Get as many small drivers as you can. I have tons of little ones of many widths and my collection grows frequently. I can now also custom grind my own tips. Also, insure that you are holding the frame tightly and you exert a lot of downward pressure as you turn.
1. Place the stuck screw and item in a sonic jewelry cleaner if all can go in water. This really helps to loosen things up significantly. I've had instances of screws working themselves out with enough time in the bath. Immovable prior...
2. Try using a rubber band over the tip of the screwdriver. This helps give it more bite.
3. For flat slot screws that snap in half, a trick that sometimes works is to grind a half circle tip from a round shaft. Use that as a screwdriver. This works only if the threads at the top of the hole haven't been damaged by previous attempts to free the screw.
4. The final option is the hardest. And, naturally, the one that you mostly have to resort to. You need to use a lathe/mill or a CNC machine because a drill press has too much runout typically. But, with a proper turning machine, you can tap a 1mm hole into the stuck set screw a millimeter or two deep. Then, simply insert a small screwdriver (jewelers screwdrivers work best). The with of the screwdriver blade should be just larger than the diameter of the hole. You force it in. Then, you can turn the screw out. Pictures below.
I rebuild mono cutterheads. Close to 250 now. I also am going to be providing Neodymium Magnet Upgrades for Presto Cutterheads. I also have a Presto Clone brewing and close to ready for sale.
http://www.cutterhead.repair
http://www.prestoclone.com coming soon...
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Statistics: Posted by opcode66 — Fri Feb 15, 2019 11:41 pm
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