http://www.mcmaster.com -- search for thread files
They sell a pretty sweet metric combo file for the external threads, as well as a tool that deals with munged internal threads (this one is trickier to use...I'll report back after a couple of attempted repairs).
By the way, there's nothing that makes a chaser-converted crank remover any less useful as a remover.
Scott Minneman San Francisco, CA, USA
-----Original Message----- From: john strizek [mailto:firstname.lastname@example.org] Sent: Monday, May 26, 2008 9:01 PM To: email@example.com Subject: [CR]stronglight threads, lockring threads, and thread files
1. Stronglight 23.35 puller threads. If you have a vintage (23.35) Stronglight crank arm with bunged up threads there are two possible fixes I have used. a.) use a VAR tap for this particular threading. If you were not the sucessful bidder for the one that Tom Hayes recently let go cheap, you will have to be patient and hope another one comes up for sale. b.) You can make a "chaser" from a puller by cutting slots 90 degrees from the threads so that the sharp cuts clean up the damaged threads. Of course this sacrifices a perfectly good puller, replacements are not cheap.2. lockring threads on aluminum hubs can be cleaned in the same manner as the crank arm above by sacrificing a perfectly good lockring. That is usually cheaper than a new hub.3. thread files for sae thread pitches are readily available. Metric thread files are far less common but are out there. It is surprising that metric thread files are not more comon due to the increase of metric automobile imports in recent times. I have found a metric thread file useful for cleaning up male threads, like hub threads. I only wish I could find a single 1.0 mm pitch file. that seems to be the most often used on bikes. As Always, Happy Trails fromJohn Strizek inSacramento, California USA