Search found 134 matches

by KellyJones
Thu Jun 11, 2020 3:55 pm
Forum: General Discussion
Topic: Before you do anything, you must do something else first...
Replies: 23
Views: 1624

Re: Before you do anything, you must do something else first...

The more I thought about it, the more it bugged me. The only way for air and debris to get into the system is through the compressor. So I pulled the air filter. (Never even looked at it before.) The filter is comprised of a thick piece of oil soaked felt, with a cheesy sheet metal cap. I think the ...
by KellyJones
Thu Jun 11, 2020 3:42 pm
Forum: General Discussion
Topic: Before you do anything, you must do something else first...
Replies: 23
Views: 1624

Re: Before you do anything, you must do something else first...

Kept digging and found a second plugged elbow. The interesting thing is it isn't rust or simple dirt. Seems to contain bits and pieces of woody plant stems and other stuff. How would that stuff get into the system?
by KellyJones
Thu Jun 11, 2020 11:38 am
Forum: General Discussion
Topic: Before you do anything, you must do something else first...
Replies: 23
Views: 1624

Re: Before you do anything, you must do something else first...

Ripped out half the system this morning. Think I found the culprit.
pipe.jpg
Plugged iron air pipe
by KellyJones
Wed Jun 10, 2020 12:24 pm
Forum: General Discussion
Topic: Before you do anything, you must do something else first...
Replies: 23
Views: 1624

Re: Before you do anything, you must do something else first...

when I installed the system there were lots of warnings not to use PVC pipe, due to the possibility of a sudden catastrophic failure in which PVC shrapnel would be thrown all over the shop. Is Pex not susceptible to this? An I do have low point drains, but I honestly had not opened them before. Foun...
by KellyJones
Tue Jun 09, 2020 4:09 pm
Forum: General Discussion
Topic: Before you do anything, you must do something else first...
Replies: 23
Views: 1624

Before you do anything, you must do something else first...

Went out to the shop this morning to do a small welding job for a neighbor. First step was to grind off the paint in the area to be welded. Grabbed my air powered grinder and sat down to do the job and...fizzle sticks. Had pressure, but no flow. The grinder would rotate a few RPM and then slow to a ...
by KellyJones
Thu May 14, 2020 11:55 am
Forum: General Discussion
Topic: Does Dykem go bad?
Replies: 6
Views: 1485

Does Dykem go bad?

Bought some Dykem for layout about 15 years ago. I don't use it much, so a 4 oz. bottle has lasted a long time. I recall it being a deep midnight blue, and opaque when applied. This is supported by the old spills on the bottle. Today I went to use it, and it appears to be a translucent purple. Very ...
by KellyJones
Sun May 10, 2020 6:05 pm
Forum: Milling Machines
Topic: Two flute v. four flute end mills
Replies: 7
Views: 1241

Two flute v. four flute end mills

Thought I would post something I learned on anther forum here today. Being a newbie, I went to machine some aluminum the other day. I selected a 3/16 diameter, 4 flute end mill. The job was to simply hog out a lot of material in a relatively small part. The part was too small to hold and use a bigge...
by KellyJones
Sun May 10, 2020 5:55 pm
Forum: Milling Machines
Topic: Gear cuting
Replies: 17
Views: 2366

Re: Gear cuting

Several folks have asked me about the rack and pinion. A couple years ago a co-worker retired and sold everything and moved to Colorado. Among his possessions was an almost complete library of Home Machinist back issues that had belonged to his father, dating back to about 1990. He left them with me...
by KellyJones
Thu May 07, 2020 4:54 pm
Forum: Milling Machines
Topic: Gear cuting
Replies: 17
Views: 2366

Re: Gear cuting

Thanks atunguyd. It has the distinction of being the only tooling I have that fits the RT. I have been recently looking for a chuck that might fit, but 2MT chucks seem to be rare.

I also finished the mating rack today.
by KellyJones
Tue May 05, 2020 6:10 pm
Forum: General Discussion
Topic: Undercuts and stress risers
Replies: 13
Views: 2024

Re: Undercuts and stress risers

Also note that any shape undercut can be used, provided it has a radius. For example, the undercut illustrated above requires a cut close the the face and may require a very long tool. Another way to do it is to come to the face on a 45 degree angle. This types of cuts are sometimes also known as gr...
by KellyJones
Thu Apr 30, 2020 1:26 pm
Forum: Milling Machines
Topic: Gear cuting
Replies: 17
Views: 2366

Gear cuting

Successfully cut a gear on my milling machine. Very complex task, even with a form cutter.
by KellyJones
Sun Apr 26, 2020 11:45 am
Forum: Milling Machines
Topic: Another dumb question...
Replies: 5
Views: 1125

Another dumb question...

I bought a Grizzly milling machine about 10 years ago and now that I'm retired, I finally have plenty of time to play with it. It's a G3617 horizontal-vertical milling machine, and I've used it almost exclusively in the vertical position all this time. I think I have set it up as a horizontal machin...