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+--- Thread: Todays Project - What did you do today? (/thread-727.html)
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RE: Todays Project - What did you do today? - DaveH - 09-17-2012
Greg,
Wow, does tend to look like fun
DaveH
RE: Todays Project - What did you do today? - EdK - 09-17-2012
Well I finally have something to contribute to this thread.
I cut up some steel in preparation for welding practice.
[attachment=2990]
And cut up a piece of aluminum for an indicator holder I'm making.
[attachment=2991]
And finally got started on my cat eye. I started with a 1/4" drill bit and went up to 1/2" in 1/32 steps. I'm pretty sure that's leaded steel but I'll find out when I go to bore it out.
[attachment=2992]
I know, all pretty boring stuff but at least I got some time in the shop.
Ed
RE: Todays Project - What did you do today? - stevec - 09-18-2012
(09-17-2012, 06:56 PM)EdK Wrote: And finally got started on my cat eye. I started with a 1/4" drill bit and went up to 1/2" in 1/32 steps.
Ed
Ed, do you mean you chucked 8 different drills to reach ½ inch?
You really wanted TIME in the shop.
RE: Todays Project - What did you do today? - DaveH - 09-18-2012
Hi Ed,
"Cat eye" what's one of them then?
DaveH
RE: Todays Project - What did you do today? - TomG - 09-18-2012
(09-17-2012, 06:56 PM)EdK Wrote: And finally got started on my cat eye. I started with a 1/4" drill bit and went up to 1/2" in 1/32 steps. I'm pretty sure that's leaded steel but I'll find out when I go to bore it out.
Come on Steve, maybe he had good reason to spend a little extra time in the shop!
Since this site is all about learning Ed, this is how I would have done it:
I don't use a pilot drill for drills up to 1/2". Most of my smaller drills have a split point, so they don't require a pilot but even if they didn't, the chisel point on a 1/2" drill is not large enough to worry about. On drills over 1/2" I drill a pilot hole about the size of the chisel point so it takes less force to feed the drill. Even a 1" drill goes in pretty easy with a 1/4" pilot hole.
An incremental step to the final size will tend to make a rounder hole, but if that's important I'll normally ream or bore it to size.
Tom
RE: Todays Project - What did you do today? - Highpower - 09-18-2012
(09-18-2012, 08:58 AM)DaveH Wrote: Hi Ed,
"Cat eye" what's one of them then?
DaveH
It's those things you find in a "cat head" of course.
RE: Todays Project - What did you do today? - Highpower - 09-18-2012
(09-18-2012, 09:09 AM)TomG Wrote: I don't use a pilot drill for drills up to 1/2". Most of my smaller drills have a split point, so they don't require a pilot but even if they didn't, the chisel point on a 1/2" drill is not large enough to worry about.
Tom
I guess I'm in the middle then.
Split points go straight in, but 1/4" is my limit for chisel points. Anything larger than that gets a pilot hole the width of the chisel point on the final drill size, and I go straight to it.
RE: Todays Project - What did you do today? - EdK - 09-18-2012
Guys,
I purposely made the statement "I started with a 1/4" drill bit and went up to 1/2" in 1/32 steps." because I knew it would elicit some comments and that's what I was looking for. I guess I baited you. I started with the 1/4" bit because I didn't know what type of steel it was and I wanted to get a feel for how it drilled. I thought it was always good to start with a pilot hole so thanks Tom for your comments about drilling up to 1/2" with no pilot hole needed. I don't have split point drill bits though. I'm sure I could have gone from the 1/4" bit right to the 1/2" put wasn't sure that was the proper procedure. Now that I know it is, next time I'll save my self some time and skip the pilot hole, although it did serve a purpose this time in helping me get a feel for how the unknown steel was going to dill.
Thanks for the comments.
Ed
RE: Todays Project - What did you do today? - TomG - 09-18-2012
(09-18-2012, 09:35 AM)Highpower Wrote:(09-18-2012, 09:09 AM)TomG Wrote: I don't use a pilot drill for drills up to 1/2". Most of my smaller drills have a split point, so they don't require a pilot but even if they didn't, the chisel point on a 1/2" drill is not large enough to worry about.Split points go straight in, but 1/4" is my limit for chisel points.
Tom
I have been accused of "living on the edge".
Tom
RE: Todays Project - What did you do today? - Highpower - 09-18-2012
Yeah, I can believe that Tom.