(06-03-2019, 11:09 PM)Bob Vaughan Wrote: LOL
Wow, after being at it for so long you must have a heck of a shop.  I'll have to stop by for a tour next time I'm having lunch at Crabby Bill's.

(06-04-2019, 06:11 AM)Redman Wrote: Probably a fortune in 16th, 17th, and 18th century tools. 

Gad I'm surrounded by old fossils. 


I'm only 71.

(06-04-2019, 07:39 AM)Bob Vaughan Wrote: 74 here. Timberwolf graciously and tactfully endures the brashness of our relative youth and inexperience.

(06-03-2019, 11:09 PM)Bob Vaughan Wrote: LOL
Wow, after being at it for so long you must have a heck of a shop.  I'll have to stop by for a tour next time I'm having lunch at Crabby Bill's.

(06-04-2019, 08:13 AM)Timberwolf Wrote: ..............................
"Wow, after being at it for so long you must have a heck of a shop"

I wish....when I hit 75, my mind starting writing checks my body couldn't cash, so it's just a garage full of junk these days....
 

(06-04-2019, 09:01 AM)Redman Wrote: Mine is getting that way.

So back to the drill bits.

Percussion rock bit. Largest I've seen was 24" diameter. Took me two and a half days to set up and cut the drive splines on two of them. Took another guy and myself 24/7 for 7 days to drill and ream the holes for the carbide buttons. Around 500 holes as I recall. Tolerance of +/- 0.0003".

(06-07-2019, 08:17 AM)Timberwolf Wrote: ........................

 

(06-08-2019, 06:36 PM)Redman Wrote: Thankee, thankee. Gad I'm glad that was a one time deal. That material, 41xx? was HT'ed very hard and I was the junior employee so I got the overnight stuff after I cut the splines.

BTW they gave us solid carbine drills to make the holes before reaming. The drills kept breaking regardless of how we operated them. I took it upon myself to use HSS drills and change the CNC program accordingly. Hero time, they had tired of buying the carbine drills and we still beat the time given.

(07-02-2016, 12:40 AM)Stwood_ Wrote: that my grandfather gave me around 40 years ago.
He told me they were for steel, and some wood sometimes.

I've used them on steel, a lot.

I grabbed a 1/2" bit the other day and was going to drill some holes for a dowel in some pine. After the smoke cleared out of the shop, I noticed that it blowed the bottom of the wood 2x out.
Are these not the correct bits? I remember reading somewhere that someone now makes a special bit for wood? Some brad point thing? What's a brad got to do with a drill bit?

(03-08-2020, 04:46 PM)mike4244 Wrote: You've been a member since 2003. almost 20,000 posts. Try reversing the drill in the chuck, usually bores better with the sharp end down.
mike