Drill Bits

[DebDav]

Now that the bus is in the driveway.

Need drill bits.

Going to drill every 6" and sparay low expansion foam in channell.

Will break and wear down bits.  Need place to order quantity of same size.

I think that this has been discussed but I cannot find

thanks in advance

David

[wal1809]

I like the Drill Doctor for re-sharpening bits.

[Len Silva]

Go to a commercial tool supplier and pay the man whatever he asks.

I once had to drill a lot of holes through 3/8" steel.  The hardware store bits would last for 8 or 10 holes.  I went to my friendly tool dealer and bought some that were 4 times the price, but they would do a hundred holes before even slowing down.

[luvrbus]

Brown Tool co


www.browntool.com they are in OKC and sale to American Air Lines and others good drill bits at a good price


good luck

[bevans6]

What are you drilling through and what size hole?  What drill motor are you going to use?

Brian

[belfert]

I bought colbalt bits from McMaster-Carr when I drilled 1000 holes for riveting side planels.  I think I got about 100 holes per bit.

[robertglines1]

Need to add type of bus to your info. I just did this to the 98 prevost. the thin tubing /mild steel isn't hard to drill and used one bit for entire coach.  3/16th  6 inch apart filled let expand till run out next upper hole then added more above etc.  worth it? but can't see where it hurt.  did same to bay doors. -they did not buldge! give time to expand before going to next level;I rushed it at first.  10 to 15 minutes.  Hope this helps.   Bob

[jjrbus]

I used cobalt, purchased at Grainger.  One tool I purchased for the conversion was a Drill Doctor, paid for itself.
                                                                  HTH  JIm

[FloridaCliff]

I drilled over 3,000 holes for new rivets on my coach.

Bought a dozen good bits (tool supplier) and a drill doctor.

Only way to go!

Cliff

[lostagain]

I take my drill bit to the bench grinder and sharpen it in under a minute. Takes a few tries to get it right, but you eventually get it.

JC

[DebDav]

Thanks all.  Will be buying good bits and a drill doctor.

Will a 18 volt rechargeable be too small?  Do I need to use a corded drill motor?

[kyle4501]

If you are drilling stainless, you will be much happier with the cobalt bits.

[thomasinnv]

definitely use a corded drill. Batteries won't last long at all.

[luvrbus]

Deb, you need a corded drill cordless drills kill a drill bit unless you buy the low speed bits and I don't know about the drill doctor I cannot make one work like JC I use the bench grinder and oil

good luck

[Charles in SC]

I do not think you said what kind of material you are drilling. IMHO for aluminum you want to use a split point bit with a high speed(rpm) and low feed rate. For steel you want a slow speed(rpm) and high feed rate. Use some Boelube and the bits will last a long time. Try Travers tool online as a supplier.