Search found 161 matches

by ChipMaker4130
Fri May 18, 2018 8:42 am
Forum: General Discussion
Topic: New member, with lathe motor problem.
Replies: 11
Views: 3232

Re: New member, with lathe motor problem.

. . .I don't have a multimeter with capacitance setting, but keeping my eyes peeled for a good deal on one now. . . Most DMMs have a very limited range of capacitance measurement. Before you buy, make sure the one you intend to get can actually go all the way to 150uF. Was this motor running for yo...
by ChipMaker4130
Tue May 01, 2018 8:05 pm
Forum: General Discussion
Topic: Milling slots in 1045
Replies: 11
Views: 2583

Re: Milling slots in 1045

Well, just how close to 1/2" do you need to be? And, what kind of slot finish is acceptable? Sounds to me like this might be some kind of fixture plate for your rotab. If so, fit and finish don't need to be perfect and you can save a lot of time and aggravation by using a 1/2" roughing cutter for th...
by ChipMaker4130
Mon Mar 05, 2018 1:01 pm
Forum: General Discussion
Topic: Plugging holes in aluminum
Replies: 16
Views: 3385

Re: Plugging holes in aluminum

How far do you need to move the holes? If it is 2/3 diameter or less, Bill (warmstrong1955) has the best suggestions. If it is more than that I would do as you said in your OP: thread the holes and make plugs to loctite in (make the plugs a very close fit and use the thin bearing mount or equivalent).
by ChipMaker4130
Sat Feb 24, 2018 8:52 pm
Forum: General Discussion
Topic: It's been a long, long, long time!!
Replies: 16
Views: 4436

Re: It's been a long, long, long time!!

I too am delighted to hear from you! I wondered where you'd gone. Seems like you've had your share of troubles for a while, maybe things are looking up. I like the cannons! -- The detail is wonderful, but so small I'd have to use a microscope to attempt something like that. Very nice work.
Gordon
by ChipMaker4130
Thu Feb 08, 2018 9:18 pm
Forum: General Discussion
Topic: External turning with a boring head
Replies: 16
Views: 3467

Re: External turning with a boring head

A bit of lockite on the threads will solve the problem of not being able to run in reverse. Heating the head can destroy the bond so you can later unscrew it if necessary. Careful, here. After thorough cleaning, using 'red' loctite and allowing full cure, the shank on my boring head came loose runn...
by ChipMaker4130
Tue Jan 02, 2018 10:24 pm
Forum: General Discussion
Topic: getting endmills sharpened...
Replies: 8
Views: 2517

Re: getting endmills sharpened...

SteveM wrote:. . .Once you have them sharpened, though, you will have undersized tools. . .
I typically only need the end sharpened the first time around, thereby keeping the original dimension. Seems the corners & end edges go first 90% of the time.
by ChipMaker4130
Sun Dec 03, 2017 10:33 am
Forum: General Discussion
Topic: Corrosion between dissimilar metals
Replies: 14
Views: 3441

Re: Corrosion between dissimilar metals

I just use plated fasteners and anti-seize compound. Lasts for many years in a normal atmosphere. In the days of cadmium plating and lead-base anti-seize, it would last even longer.
by ChipMaker4130
Thu Nov 23, 2017 8:52 pm
Forum: General Discussion
Topic: Electric motor question
Replies: 7
Views: 2099

Re: Electric motor question

Nah... you can 'what if' yourself into never doing anything. You checked it out, it works, enjoy it. The 'one small connection' failure mentioned above would likely be worse at full voltage/power because of the increased tendency to arc. Some motors draw excessive current at lower than specified vol...
by ChipMaker4130
Tue Nov 14, 2017 10:55 pm
Forum: General Discussion
Topic: Electrical problem bad vibration
Replies: 18
Views: 3555

Re: Electrical problem bad vibration

It amuses me that so many of you have adamantly stated that motor vibration is always mechanical, never electrical. That, my friends, is simply not true. Single phase and three phase units each have a number of potential electrical problems which can cause rather high-intensity vibs.
by ChipMaker4130
Thu Sep 28, 2017 9:10 pm
Forum: General Discussion
Topic: What to do with this metal
Replies: 14
Views: 3247

Re: What to do with this metal

7075 T-xx will cut just fine with your sabre saw and a hacksaw-like metal cutting blade. You'll need to make the cut with support close underneath the blade path and use WD-40 to help prevent dragging and keep the chips from clogging the teeth. A variable-speed saw on a slower stroke setting will ma...
by ChipMaker4130
Tue Sep 05, 2017 1:45 pm
Forum: The Junk Drawer
Topic: Homebuilt ESP8266-EVB basic relay clock
Replies: 5
Views: 3215

Re: Homebuilt ESP8266-EVB basic relay clock

Is this a machinist oriented project or an electronics project? I am trying to see how it relates to this forum. What am I missing?
by ChipMaker4130
Sat Jul 22, 2017 1:54 pm
Forum: General Discussion
Topic: Vacuuming grinder dust
Replies: 6
Views: 2033

Re: Vacuuming grinder dust

That's the one I used. It is made of very heavy plastic, and the top pops off for cleaning (I vacuum up dirty, oily, coolant coated crap and after a while the cyclone is black). I'm on the original filter in my shop-vac and I've been using it heavily for almost 2 years! I've blown the filter out a c...