stunthanger.com
Engine basics => Engine set up tips => Topic started by: Allan Perret on April 27, 2009, 03:41:34 PM
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Anbody out there making one for sale, or ever seen plans to make one ?
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Lee Machine Shop. Address in this forum.
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A decent quality compass or divider with a slotted leg that will hold a #11 X-acto blade works pretty good. Cut the inner diameter first and then the outer - the extra material around the outside helps hold the shim stock in place.
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I made a simple cutter from scraps of mild steel. For cutting just a few shims there is no need to harden the steel. You do need a lathe to make these cutters, and some means of squeezing them together. I use a hydraulic press for that, but a decent vice will do the job as well. The tool is made in 3 parts, the first is turned with a raised section that is the required size of the shim. In the centre of this a hole is drilled to match the spigot on the second part. The spigot on the second part should be a sliding fit in the hole and the diameter above that should be a neat fit into the depressed section of part 1. To use this you need to cut a hole in your shim material (aluminium or brass) large enough to accept the spigot on part 2 (It doesn’t have to be too neat as this bit will be discarded). With the shim material placed over part 1 and the spigot of part 2 through the hole in the shim, pressing down on part 2 will cut out the centre disc of the shim. Then part 3 comes into use. This has a central hole that is a sliding fit on part 2 and a relieved section that is the same diameter as the OD of the finished shim. It is slid over part 2 and pressed down until it shears the shim material and passes down over the outside of part1. After separating the 3 pieces, the finished shim washer can be put to one side and the scrap centre bit
discarded.
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I use scissors to cut the outside and a compass with an xacto fitted to do the inside.. ... one blade per gasket... practice .. my first ones were not that great.. also don't cut them exact HB~> HB~>.. allow a little so they slip into place easier. Also, a taller the compass works better than a one of those "school compasses"..
Jim
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I used to do that with E-acto blades and scissors. "Lee Machine Shop" only way to go. A little expensive, but, worth every penny. DOC Holliday