Model Engine Maker
Help! => Hints, Tips & Tricks => Topic started by: Paulc on October 23, 2019, 03:14:43 AM
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What does one use to shim under a flat part when edge milling on a rotary rable?
Don't want to gouge the table inadvertently.
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What does one use to shim under a flat part when edge milling on a rotary rable?
Don't want to gouge the table inadvertently.
I use aluminum plate often times for a sacrificial shim.
Jim
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When I am feeling lazy I just clamp the part to a piece of aluminum waste stock to lift it off of the rotary table. When I’m feeling fancy I’ll make a sacrificial fixture out of aluminum or more recently 3D print one.
Tony
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Many choices
I've used aluminum plate, and also plywood!
If the cut is just cutting through, use the plywood as is. If you have depth cuts that are important, mount the plywood up first and face cut it with a fly cutter gently....that will bring it flat, then mount the work piece down and have at it.
Clockmakers have used wooden chucks to machine all sorts of things for 500 years......
Dave
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Whatever is to hand - Ply, MDF, Aluminium, Plastic sheet, etc Or pack with something that is smaller than the OD of the part so you don't cut it, subject to how it can be held.
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Thanks guys. All great ideas and I'm sure one or all will be tried depending what I have in the junk pile ;)