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| This is a discussion on Snapped off two bits, help? within the Table-mounted Routing forums, part of the Routers category; I’ve just broken two ¼” straight bits cutting drawer bottom dados on the router table ... |
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| Registered User ![]() Join Date: Apr 2009 Location: Whitby, Ontario First Name: Andy Posts: 3 ![]() |
I’ve just broken two ¼” straight bits cutting drawer bottom dados on the router table and am unsure why. They are only ¼” deep and I went slower after the first one (thought it was flawed) but it still broke the second as well and the funny thing is I haven’t been able to find the ends that broke off to see if they were burnt, the wood didn’t have burn marks. I reverted to my dado blade to finish up but would prefer to use the router table, any help would be appreciated especially since those would have hurt if they found me.
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| | #2 (permalink) | ||
| Forum Contributor ![]() |
Hmm, a bit odd. Are they 1/4 or 1/2" shank? How slow is slower? What type of wood? Might try an up-cut spiral bit. I use those for almost everything now.
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| | #3 (permalink) | ||
| Registered User ![]() |
Hi Andy. Welcome to our little corner of the 'net. As for the bits breaking, what make are (were?) they? Some bits are truly better then others. Did just the tip break, or did they break at the shank? Go Wings!!
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| | #4 (permalink) | |||
| Forum Contributor ![]() |
Hi Andy It sounds like user error,,,one maybe but two bits...well ... They will break so easy if they get jammed or push the bit to hard in to the stock...or if the bit is not tight in the chuck..and the bit moves up and locks up in the stock... ====== Quote:
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| | #5 (permalink) | ||
| Registered User ![]() Join Date: Apr 2009 Location: Whitby, Ontario First Name: Andy Posts: 3 ![]() |
They were 1/4 shank, not sure how to judge the feed rate, cut it by a quarter I guess at least. I even stopped half way to knock the sawdust from the slot to try to keep the bit cool. I think I'll try a solid carbide bit as you say, I bet that solves the problem.
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| | #6 (permalink) | ||
| Registered User ![]() Join Date: Nov 2006 Location: Fort Worth,Texas USA First Name: George Posts: 2,443 ![]() ![]() ![]() |
Welcome, Andy. Another suggestion is to not take as big of a bite. For instance; if the slot is 1/4" deep only take about 1/8" cut at a time. This will lessen the side pressure on the bits. Also, using 1/2" shanks will help.
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