Re: Help A Dummy?

Posted by Gerald J. on April 12, 2007 at 16:18:29 from (67.0.103.249):

In Reply to: Help A Dummy? posted by Allan In NE on April 12, 2007 at 13:50:45:

Get yourself a 21/32" drill with a 1/2" shank and ground with a 135 degree split point. It won't walk from the punch mark and it drills as fast as the pilot drill so you don't have to drill 3/16", 5/16" 7/16" to get up to size. I bought one last year from McMaster-Carr and drilled 40 holes in 1/2" steel plate making wheel adapter plates and then drilled another 8 or ten holes in 3/4 steel when it needed a bit of touch up on the grinder and finished off 8 more holes in 3/4" steel. The one I bought (made in St. Paul) came with three flatts on the 1/2" shank so it won't slip in the drill chuck. I did use pipe thread cutting oil and a fairly slow speed on these holes.

1/32" over is pretty much industry standard, unless you bolt the pieces together with the first hole and then drill all the rest of the holes in both pieces while clamped together. Then any slight burs on the bolts or the holes will make the bolts reluctant to go in the hole. Chewing up threads with a tight hole doen't make bolts go into nuts well.

If you have to measure from existing holes to make new holes, 1/16" at 5/8" diameter may not be enough. Then you use the drill or a large file to slide a hole over a little.

Gerald J.

Replies:

• Re: Help A Dummy? dan hill 03:17:38 04/16/07 (0)

Add a Reply Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]