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downcut router bit
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Old 22nd September 2018, 07:05 AM   #71
robinlawrie is offline robinlawrie  United Kingdom
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Join Date: Feb 2008
Quote:
Originally Posted by robinlawrie View Post
Ok so i am about to pull the trigger on some new bits.

Need to decide between the freud o-flute downcut 1/4 inch or the whiteside standard spiral downcut. Pricez are basically the same

I also need to decide between getting one good 3/8 inch straight cut bit or a pair of 1/4 inchers. Probably whiteside.

Tempted by the extra strength of the 3/8 given ive broken 3 cheap 1/4 inchers, but for the same price i can get 2 1/4 inchers. Final opinions?

Thanks!
Anybody? Final opinions before i order? O flute or standard downcut? 3/8 or 2x 1/4"? Cheers!
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Old 22nd September 2018, 04:27 PM   #72
phivates is offline phivates  United States
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Join Date: Jan 2011
Location: Willamette Valley
Go with the two 1/4 Whiteside bits. Your little tool will thank you.
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Old 2nd October 2018, 09:33 AM   #73
robinlawrie is offline robinlawrie  United Kingdom
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Join Date: Feb 2008
Hi all quick update. Ive recieved 2x whitwside straight cuts, and 2x downcut spirals (cheaper to buy those from the US than the freud or cmt bits here in italy, including shipping! Go figure)

I also got to the bottom of my snapping bit issue. As suggested, it was a hardware/ user issue. My lovely circle jig. Turns out i had screwed it too tight to the wood, so it was resisting turning. When i was cutting, i didnt really notice, but the stress on the plate was causing the attaching bracket to flex a few mm. This was enough for the bit to touch the side if the slot it sits in. 3mm Stainless steel plate, meet 24,000 rpm router bit. That would do it eh?

I have now modified the circle jig, with a guide pin at the other end of the router base, which should hold it absolutely solid and remove any flexing.

Ive also glued up a test piece of translam, using offcuts, so once i get the modified plate back from the metalwork guy, ill start doing some tests with my new bits.
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Old 3rd October 2018, 04:03 PM   #74
robinlawrie is offline robinlawrie  United Kingdom
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Join Date: Feb 2008
yay! i did my first test with the new downcut router bit, fixed circle jig, and glued up test section of translam.

ill let the pictures speak for themselves. i just gave a quick wipe around the top edge with 220 grit sandpaper, apart from that its all raw cuts.
Attached Images
File Type: jpg IMG_20181003_143344.jpg (452.5 KB, 29 views)
File Type: jpg IMG_20181003_143352.jpg (489.2 KB, 30 views)
File Type: jpg IMG_20181003_143412.jpg (369.8 KB, 30 views)
File Type: jpg IMG_20181003_143420.jpg (364.6 KB, 28 views)
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Old 3rd October 2018, 04:09 PM   #75
GASCo is offline GASCo  United States
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Location: Denver, CO
downcut router bit
Beautiful!
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Old 3rd October 2018, 04:48 PM   #76
DPH is offline DPH  United States
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Join Date: Dec 2008
Location: Portland, OR
Glad to hear (and see) that it all worked out and you found the source of the problem. It wasn't adding up from the usual causes!
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Happy DIYing, Daniel
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