Search found 1322 matches

by earlgo
Sun Dec 09, 2018 10:03 am
Forum: General Discussion
Topic: feeling stupid
Replies: 35
Views: 1284

Re: feeling stupid

Is the shank of the drill 13mm also? if it is, you might be able to grind it into a 'flat drill', reharden it and make do. OR start from scratch with a piece of drill rod and make your own flat drill. You'd of course have to adjust speeds and feeds for the different geometry. Just pretend you are a ...
by earlgo
Fri Dec 07, 2018 9:54 am
Forum: General Discussion
Topic: Good practice question
Replies: 19
Views: 601

Re: Good practice question

No-one has mentioned follower rests, yet. I don't have one so I can't say yay or nay.
--earlgo
by earlgo
Fri Dec 07, 2018 9:51 am
Forum: General Discussion
Topic: Good practice question
Replies: 19
Views: 601

Re: Good practice question

These partial centers are what I have been using for years. I think the ground half center is from 1980 or so.
centers.jpg
partial centers
A bit of high pressure center lube and you are good to go. The drill center was a broken drill so it was free.
--earlgo
by earlgo
Wed Dec 05, 2018 10:04 am
Forum: General Discussion
Topic: HEIGHT Gauge question
Replies: 18
Views: 635

Re: HEIGHT Gauge question

W: If one could conjure up a clamp to affix a tool bit or gage block to the bottom of the scribe, then your idea would work. I failed to imagine that before I posted. Sorry I got off track. Just for fun, here is a pic of my Po'mans Height gage. It works for my amateur efforts. :roll: Po'man height g...
by earlgo
Tue Dec 04, 2018 1:14 pm
Forum: General Discussion
Topic: HEIGHT Gauge question
Replies: 18
Views: 635

Re: HEIGHT Gauge question

vhg.jpg Your height gage must be different from this. The bottom of the scriber holder is most likely not able to be zero if it were able to reach the surface plate. Adding a tool bit or gage block would still not fit your description. Turning the scriber over would not work either. Am I not able t...
by earlgo
Tue Dec 04, 2018 9:27 am
Forum: General Discussion
Topic: HEIGHT Gauge question
Replies: 18
Views: 635

Re: HEIGHT Gauge question

I'm having a bit of difficulty visualizing your process. If you are measuring from the surface plate to the bottom of a feature, then I can see how your procedure can work. If you are measuring to the top of a feature then I have difficulties. Any height gage I am familiar with does not have a 'top'...
by earlgo
Sun Dec 02, 2018 9:57 am
Forum: General Discussion
Topic: feeling stupid
Replies: 35
Views: 1284

Re: feeling stupid

Glenn Brooks wrote:
Sat Dec 01, 2018 3:48 pm
At least I knew how to gin up a duplicate part, without to much trouble. Without the set screw.
Glenn
I think the solution to that would have been to drill and tap another hole 90° to the first and pretend you had 2 set screws. 8)
--earlgo
by earlgo
Sat Dec 01, 2018 2:03 pm
Forum: General Discussion
Topic: feeling stupid
Replies: 35
Views: 1284

Re: feeling stupid

By "get her done" do you mean put threads in the hole or break the tap? :lol:
--earlgo
by earlgo
Sat Dec 01, 2018 9:41 am
Forum: General Discussion
Topic: feeling stupid
Replies: 35
Views: 1284

Re: feeling stupid

Well, if it makes you feel any better, I haven't broken this tap yet.
spindle thread tap .jpg
1-1/2-8 tap
Maybe next time it gets used. :roll:
--earlgo
by earlgo
Wed Nov 28, 2018 4:07 pm
Forum: General Discussion
Topic: PB Blaster is Snake Oil
Replies: 56
Views: 6849

Re: PB Blaster is Snake Oil

I've found the best way to loosen nuts and bolts is to use Never-Seize liberally way before the necessity of using snake oil. Especially on brake bleeder screws and lawn mower blades.
--earlgo
by earlgo
Wed Nov 28, 2018 4:02 pm
Forum: General Discussion
Topic: feeling stupid
Replies: 35
Views: 1284

Re: feeling stupid

You want an example of a mistake that will make your forehead sweat? Break a #6-48 bottoming tap in a customer gun while tapping scope mounts. If you are lucky some of it sticks above the surface. If not, it is off to the EDM house and hopefully you will find someone there who understands the issue ...
by earlgo
Mon Nov 26, 2018 10:21 am
Forum: General Discussion
Topic: Let us discuss
Replies: 16
Views: 768

Re: Let us discuss

Mauro, you forgot to mention the time taken to design and build the holding fixture for the raw material, be it a tombstone with fixtures or a single station fixture. This of course in relation to a CNC mill. As a programmer for a 3-1/2 axis Cincinnati Milicron horizontal mill in a former job, the h...