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Forum topic by dlcarver posted 04-02-2008 06:04 PM 2358 views 0 times favorited 20 replies Add to Favorites Watch
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dlcarver

270 posts in 2477 days


04-02-2008 06:04 PM

Topic tags/keywords: sharpening

Does anyone know if forstner drill bits can be sharpened ? I have never heard of it. It looks like it would be pretty complicated. I sharpen my own drill bits usually….. but this one has me stumpped ???

Also, is there any way to keep them from burning through the wood, in deep holes…. anything over 1/2” or 3/4” deep ?

Dave

-- Dave Leitem,Butler,Pa.,http://dlcarver.etsy.com


20 replies so far

View Dick, & Barb Cain's profile

Dick, & Barb Cain

8693 posts in 3047 days


#1 posted 04-02-2008 06:18 PM

I have touched up, just the cutting edges with a small stone, or file.

-- -** You are never to old to set another goal or to dream a new dream ****************** Dick, & Barb Cain, Hibbing, MN. http://www.woodcarvingillustrated.com/gallery/member.php?uid=3627&protype=1

View GaryK's profile

GaryK

10262 posts in 2735 days


#2 posted 04-02-2008 06:21 PM

It’s possible just more work.

Also there are differences in brands of bits. Some are better than others.

-- Gary - Never pass up the opportunity to make a mistake look like you planned it that way - Tyler, TX

View ND2ELK's profile

ND2ELK

13495 posts in 2521 days


#3 posted 04-02-2008 06:43 PM

Hi Dave

We had a place out of St Louis that sharpen the prisons. Perhaps there is a sharpenig place near you. We usually got one sharpening out of a bit. After that it was cheaper to replace them. But those guys were pretty rough on bits

God Bless
tom

-- Mc Bridge Cabinets, Iowa

View Blake's profile

Blake

3439 posts in 2621 days


#4 posted 04-02-2008 06:58 PM

The way you keep (any) drill bit from burning is by letting the wood chips escape, which take the heat out of the hole with them.

When drilling deep holes with a forsner bit the chips tend to pile up above the bit (in the hole). Just bring the bit up out of the hole every few seconds to eject the chips (I am assuming you are using a drill press), and then continue cutting.

I don’t know about sharpening them.

-- Happy woodworking! http://www.openarmsphotography.com

View Scott Bryan's profile

Scott Bryan

27251 posts in 2569 days


#5 posted 04-02-2008 07:38 PM

I agree with Gary’s statement about the quality of the bits. I have bought individual bits and they cut fine. But on impulse I bought a set of Tradsman bits at Lowe’s and they don’t cut very well, especially the larger ones.

-- Challenges are what make life interesting; overcoming them is what makes life meaningful- Joshua Marine

View brunob's profile

brunob

2277 posts in 2917 days


#6 posted 04-02-2008 08:11 PM

I have sharpened one or two of mine with a small file. Seems to work OK.

-- Bruce from Central New York...now, if you'll pardon me, I have some sawdust to make.

View Dadoo's profile

Dadoo

1776 posts in 2738 days


#7 posted 04-02-2008 08:16 PM

Blake’s got it there. I have the same burning problem and have found that going slow and ejecting the shavings often, works best. Most of your carvings (some of the best I’ve seen in a long while) are in soft woods like pine right? Soft woods have a lot of pitch and moisture that would slow things down. Look at your blades edge after drilling. If the wood fibers are bent aroung the edge then it’s obviously not cutting. If the edge is clean, then it’s loading up.

As for sharpening, the bits had to be sharpened once before, right? I took a look at my bits and it looks like a jeweler’s file could easily touch them up.

-- Bob Vila would be so proud of you!

View rikkor's profile

rikkor

11295 posts in 2622 days


#8 posted 04-02-2008 09:44 PM

Never tried it.

View 8iowa's profile

8iowa

1493 posts in 2508 days


#9 posted 04-03-2008 12:21 AM

I have not tried it yet, but I understand that they can be sharpened with an auger bit file

-- "Heaven is North of the Bridge"

View dlcarver's profile

dlcarver

270 posts in 2477 days


#10 posted 04-03-2008 02:03 AM

I usually am drilling cherry wood, with the forstner bit, with speed of my drill press about half the speed it can go. I do clear the chips steadily while drilling. The cut is smooth….....it just burns.

THANKS GUYS, I APPRECIATE IT !!!
DAVE

-- Dave Leitem,Butler,Pa.,http://dlcarver.etsy.com

View brianinpa's profile

brianinpa

1810 posts in 2470 days


#11 posted 04-03-2008 02:09 AM

I use a small Jewlers file set to work the edges on mine and it keeps the cutting. Staying ahead of the dullness is the key. Don’t let the bit become too dull before trying to sharpen.

-- Brian, Lebanon PA, If you aren’t having fun doing it, find something else to do.

View dlcarver's profile

dlcarver

270 posts in 2477 days


#12 posted 04-03-2008 02:18 AM

THANKS !

-- Dave Leitem,Butler,Pa.,http://dlcarver.etsy.com

View greenheadsharpening's profile

greenheadsharpening

4 posts in 2453 days


#13 posted 04-03-2008 02:33 AM

They can be sharpened. What usually needs to be sharpened is the circular rim around the bottom. Once that dulls it will not cut into the wood anymore.

-- www.greenheadsharpening.com

View Daren Nelson's profile

Daren Nelson

767 posts in 2653 days


#14 posted 04-03-2008 02:48 AM

I sharpen them all the time. If you have a good eye and a steady hand it is a piece of cake. A little time consuming, but cheaper than new.

-- http://nelsonwoodworks.biz/

View jeffthewoodwacker's profile

jeffthewoodwacker

603 posts in 2551 days


#15 posted 04-03-2008 03:00 AM

It takes some time to sharpen but it is worth while. A small file or a diamond stone work great. One trick is to use a black magic marker on the edge that you want to touch up. good luck!

-- Those that say it can't be done should not interrupt those who are doing it.

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