Scrap piece test value - Router Forums
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post #1 of 11 (permalink) Old 03-13-2015, 09:34 PM Thread Starter
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Default Scrap piece test value

All set up for a simple "straighten a crooked line"on a 2ft 6in by 1ft 6in MDF panel when I thought I'd try a new bit. Clamped a 1x2inch at both ends to the panel & then decided to have a trial run on some scrap.Just as well I did because the bearing on this NEW bit flew off & put a groove in the scrap which would have ruined the panel.Not such a big deal but goes to show the value in doing a test routing with a new bit no matter how sharp & shiny it looks
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post #2 of 11 (permalink) Old 03-13-2015, 11:12 PM Thread Starter
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Question Brand new bit

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All set up for a simple "straighten a crooked line"on a 2ft 6in by 1ft 6in MDF panel when I thought I'd try a new bit. Clamped a 1x2inch at both ends to the panel & then decided to have a trial run on some scrap.Just as well I did because the bearing on this NEW bit flew off & put a groove in the scrap which would have ruined the panel.Not such a big deal but goes to show the value in doing a test routing with a new bit no matter how sharp & shiny it looks
The bearing screw thread
was stripped
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post #3 of 11 (permalink) Old 03-13-2015, 11:50 PM
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Originally Posted by jj777746 View Post
The bearing screw thread
was stripped
whose brand???

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

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post #4 of 11 (permalink) Old 03-14-2015, 01:08 AM Thread Starter
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whose brand???
Stick,Don't know what brand.It was in a small box of assorted 1/4in bits given to me as a gift & all painted blue. No name or marks found on box or bits. I wonder why.
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post #5 of 11 (permalink) Old 03-14-2015, 06:13 AM
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Maybe Harbor Freight? They have dark blue bits.
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post #6 of 11 (permalink) Old 03-14-2015, 07:18 AM
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Could have been dangerous. I always test run a scrap piece, simply to check my set ups.
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post #7 of 11 (permalink) Old 03-14-2015, 08:59 AM
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Scary. Something I'll keep in mind from now on. Thanks. Jim

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post #8 of 11 (permalink) Old 03-14-2015, 03:51 PM
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I have had this happen to me twice. Both times it was with a Freud 1/2 in. flush trim bit. The first time was when I was using it to trim composite decking on my deck. Left a nice gouge in the deck, and I never did find the bearing. The second time it happened I got lucky and caught it before any significant damage. That time I found the bearing and the screw. Now I check the screw any time I use one of these bits, and periodically while I'm using it.

Tom B.
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post #9 of 11 (permalink) Old 03-14-2015, 03:55 PM
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I'm going to remember this tip , thanks James

I don’t always insulate , but when I do .
Ok ,I never insulate
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post #10 of 11 (permalink) Old 03-14-2015, 05:18 PM
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Might a teeny weeny bit of Loctite Blue be good preventative maintenance...?
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