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Feb 04, Machining is definitely possible. There is a company out there that makes hydraulic seals by machining the profile out of a tube of polyurethane with a CNC lathe. If you have access to a lathe, I'd rough cut it with a bandsaw, then (if necessary) freeze it again and chuck it up on a lathe to face it. chrisser, Feb 4, SHARE POST #7 djust Member.

To get the full story on the benefits of polyurethane, we tested the Hyper-Flex bushings on the Mazda MX-5 on the street and on the track.

Insert the fine tooth saw between the notches in the miter box along the pencil line on the molding. Draw it slowly along the mark until the saw teeth begin to. Nov 12, Buy a replacement tip for the iron and hammer the end flat while it is hot so it is maybe 1/16" thick and wide like a knife blade. Polyurethane is a thermoplastic so it cuts easily with a hot knife.

Melting temp is around F to F. Avoid breathing the fumes which is the case for any plastic. Cutting Polyurethane Parts.

Place the molding inside the miter box with the pencil mark face up and lined up with the back one of the notches.

One of the best machines for cutting urethane parts is a band saw. Long blades of to inches (3, to 4, mm) are desirable because they stay cooler and keep the urethane from melting. A band type we have found to work well is a 4 tooth per inch with raker set. A raker set blade is one that has its teeth alternating to the left and Estimated Reading Time: 1 min.

Apr 12, The key to minimizing harshness and elimintating squeaking is to trim the end of the bushings so that the k-member clamps on the sleeve and not the face of each bushing. The end without the flange is the one that is trimmed. I use a hacksaw to trim bushremove.buzzted Reading Time: 10 mins.