Tap needed to clear out frame threads.
- Thread starter Trebz
- Start date
Chopper the ex Copper
Alpinestars Fan
Use a cotton bud to fill the threads with paint stripper, then turn a normal bolt into it while it's still soft.
if you're not sure that tap you have is right one, then find bolt that fits the std boss or eye, find a nut that fits that bolt (so same size and thread) and the nut should easily go on tap as if were a bolt. If it starts requiring brute force then something wrong........
Chopper the ex Copper
Alpinestars Fan
Ah, sorry. Thought you might be cleaning things up after powder coating or summat.
You really shouldn't use that much force when clearing a thread. Always also back it off a quarter of a turn every turn or so to clear the thread.
If you still have part of the bolt in the thread then you need to get it out before trying to repair. Re-tapping will not help unless you go to a larger size.
If you still have part of the bolt in the thread then you need to get it out before trying to repair. Re-tapping will not help unless you go to a larger size.
RadNomad
Senior Retro Guru
You can make a perfectly effective thread cleaner out of an old bolt. Take a bottle cage bolt with longish thread and make two cuts along the length of the threaded shank using a junior hacksaw or file them using a needle file. Make the cut deeper at the leading end of the bolt shank and shallower toward the bolt head. Remove any burs with a little wire brush if you have one. It's basically a homemade tap, you can't use it to cut new threads but it will repair bruised threads and clean out any muck. You can reuse the same 'tool' for years. Here's a sample pic i found online but i suggest making the cuts deeper and longer than this photo.
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Chopper the ex Copper
Alpinestars Fan
Superb tip.
