Replies

1. 
   SteveSchoene | Dec 09, 2005 06:26pm | #1

   Shouldn't get burning with good quality bits. I used a forstner bit from the orange borg.  Never again.  Go to Woodcraft and get their better bits, or order from Lee Valley, or through Jamestown Distributors.  (Not only good bits I'm sure but I am familiar with these sources.) 

   You should decrease the speed of the drill press as well.  That may cure the problem even without new bits.  Also, try slowing your feed rate.  Its not like a router where going too slow causes burning. 

2. 
   hammer1 | Dec 10, 2005 05:31am | #2

   Forstner bits without teeth are notorious for burning, especially in a hardwood like maple. Twist bits are for metal. A simple spade bit, brad point or toothed forstner will work well. You have to watch blowing out the backside if thru drilling. A tight backer block will help with that.

   Beat it to fit / Paint it to match

3. 
   WillGeorge | Dec 10, 2005 10:06pm | #3

   Depends on what you are doing.. In really hard wood that burns I usually use my drill press. Clamp the stick down and use larger and larger bits.. Till I'm finished..

   I like fostener bits but they will BURN in PINE! Use the fostener bit for the final cut.. Ofcors the stick HAS to be clamped or ya make a Egg-Long or something...

   Ofcors?? gee sure not Queens English but colse enought here in the USA... of course?

   
   

   ---

   Edited 12/10/2005 2:08 pm by WillGeorge

4. 
   TTF | Dec 11, 2005 05:28am | #4

   I use spade bits on maple, and I quickly sharpen them each time use them. I have not gotten burns marks since I started the practice of sharpening.

1. 
   alanplanesaw | Dec 12, 2005 04:12am | #7

   TTF,

   How do you sharpen the bits?

   Thanks,

   Alan - planesaw

1. 
   TTF | Dec 12, 2005 06:40am | #8

   I have a very fine grinding wheel on a delta bench grinder. I use the tool rest and quickly regrind the angled cutting edges of the spade bit. I put some 3-in-1 oil on the bit and before grinding. It only takes about 10 seconds per bit.

    

5. 
   jazzdogg | Dec 11, 2005 09:35am | #5

   Out of curiosity, have you checked for run-out?

   I've seen out-of-tune drill presses with enough run-out & eccentricity to cause burning. I've seen similar results when the drill press table wasn't secure and the operator inadvertently applied pressure to the side of the table while drilling.

   Good luck,

   -Jazzdogg-

   "Don't ask yourself what the world needs. Ask yourself what makes you come alive, and go do that, because what the world needs is people who have come alive." Gil Bailie

6. 
   Pondfish | Dec 11, 2005 04:12pm | #6

   A 3/4" Forstner bit drilling into maple should be done at 500rpm; faster and you will generate a lot of heat that burn the wood and dull the blade.  Be sure to clear the bit so that it doesn't get clogged.  If you go at the right speed (which is fairly slow), you will peel off a long curl of maple, assumming you have a good, sharp bit. 

   Recommending the use of "Hide Signatures" option under "My Preferences" since 2005