12-20-2011, 04:45 AM
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Cosmic Waffle
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Join Date: Mar 2011
Posts: 58
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Simple access port enlarger tool for Klann clone coil spring compressor.
Parts list:
- 1 3/4" Bi Metal Hole Saw
- 1 7/8" Bi Metal Hole Saw
- 2" #8 or #10 Machine Screw
- Nut for above screw.
Build:
- Put smaller hole saw into larger. It should *just* fit.
- Work out where to put the screw hole.
- Use drill punch to make drilling the curved surface easier.
- CAREFULLY drill straight through the whole thing using a drill press.
- Insert screw, dab thread lock, screw on nut.
- Go drill out the access ports.
- Properly degrease and paint the new bare steel surface you just made!
Notes:
- Appropriate hole saws can be had dirt cheap on Ebay.
- If you have thread lock, use it on the nut.
- Buy hole saws which use the screw in/drive pin type mandrel!
- Deeper sockets are better.
- Drill out the hole saws just large enough to tightly insert/screw in the screw to lessen play.
- While I would have expected appropriate mandrel combination to exist that would allow this combination proper, I was entirely unable to find it.
- The 1 3/4" hole saw acts as guide to enlarge the hole to the 1 7/8" that is required for the spring compressor.
- It worked great for me on my w123 300td, as did the spring compressor
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