There is a cracked set screw in one of m Kwik 200 tool holders. It’s a 1/2 inch holder so its one of the most common and cheapest to find used. That being said there aren't as many used Kwik 200 tool holders to be found on the most obvious source (Ebay) as their used to be. I hate to pitch a tool holder I already have over such a cheap part.
Here is the problem. There is a tool in the holder and its well secured. I want to take the tool out, but even a clean crisp brand new hex key just pops around like the screw is rounded, but its not. I'd like to save the tool in the holder other wise I might be tempted to press it out.
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J
John B.
Try drilling out the set screw. Often one can drill a hole lengthwise through a screw/bolt which seems to release some of the tension and allows the resulting "tube" to be removed easily with an "easyout".
Even fairly hard set screws can be drilled with a high speed drill bit at low cutting speeds and high feed pressure.
D
DoN. Nichols
Understood.
First off -- is it possible that the hex socket is metric instead of imperial (or imperial if you are using a metric hex key set)?
But -- if you are willing to spend some money to be prepared for future problems like this -- there is a set of tools for drilling out taps -- and which will work on hardened setscrews too.
Look for "omegadrill" (Omegadrill set # OD-SET 1). They have a URL on the box
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. I got mine from MSC a while back. They are sometimes offered in their sales flyers -- but be sitting down when you look at the price. MSC's regular web price at the moment is $162.51. I could not find it in the flyer within easy reach. MSC's part number is: 77215606. You can check the other three sources below for the set -- or perhaps even be able to buy individual drills (the most expensive part of the 4-drill set).
You did not mention the size of the setscrew. Is this like the Aloris sets -- just one of the clones? If so, a 200 size is like the BXA size. For those, the OD-3/16 might fit down into the socket to start the drilling on center, and the OD-1/4 could likely drill out the setscrew to near the bottom of the threads. These are the two largest bits in the set. And it is likely that the screws are a metric setscrew close to a 5/16" Imperial one. (About 8mm).
The bits look quite weird, but work well in a rigid machine.
O.K. Their "where to buy" link points to two I know and two I don't
Anyway -- loosen or remove all the other setscrews, clamp the holder in a vise, and drill through the setscrew until the tool becomes a little loose in the holder. Then pull it out, and move up to the next size of bit from the omegadrill set and keep going. Hopefully, when it bites in, it will spin the screw down into the channel the tool shank normally fits in.
Another possibility -- check if there is clearance between the top of the tool shank and the top of the shank channel in the holder. If so -- try an abrasive disc -- something like the ones in Dremel sets, but likely you'll need a larger diameter. I have one about 3" diameter driven by a compressed air tool -- assuming you have an air compressor. I got this at a local auto parts place for not too much money. Given this, you may be able to cut through the bottom end of the setscrew, remove the tool, and then remove the top half of the setscrew.
Good Luck, DoN.
L
Leon Fisk
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Slightly larger left-hand drill bit? Not cheap, especially for a set but McMaster carries most sizes in singles too. A good chance it would just unscrew when you hit the magic size that relieves the tension on it...
Do you have enough material to just drill a bigger hole, thread and use a larger set screw?
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