Search found 142 matches

by KellyJones
Sun Aug 16, 2020 12:39 pm
Forum: Lathes
Topic: At last, a faceplate
Replies: 20
Views: 1788

Re: At last, a faceplate

Harold

Do you have plans for the jib crane? Or did you make it up as you went? I am thinking about a small jib crane for my shop too. ( I find as I get older, the rotary table and milling vise have put on a lot of weight...)

thanks
by KellyJones
Sat Aug 01, 2020 11:49 am
Forum: General Discussion
Topic: How to increase tightness between splined pieces?
Replies: 21
Views: 2073

Re: How to increase tightness between splined pieces?

I designed splines for aircraft applications for 30 years, most were required to handle up to 5000 in-lbs. (~410 ft-lbs). You seem to have two problems: 1) how to eliminate the backlash, and 2) ensure the spline can safely carry the required torque. I often found these two requirements at odds with ...
by KellyJones
Mon Jul 27, 2020 2:21 pm
Forum: General Discussion
Topic: Duburring Raw Stock
Replies: 14
Views: 1988

Re: Duburring Raw Stock

No, I had no special expectations about having my steak "grilled". Was just somewhat surprised. :| Normally I get my stock from trash bins and hand-me-downs, and had never ordered stock before. I knew what I might be getting. When I was working as an engineer, it was standard practice for the machin...
by KellyJones
Tue Jul 21, 2020 8:58 am
Forum: Milling Machines
Topic: Progressing From The Dark Ages.
Replies: 21
Views: 2975

Re: Progressing From The Dark Ages.

Got it. Thanks Harold.
by KellyJones
Mon Jul 20, 2020 5:27 pm
Forum: Milling Machines
Topic: Progressing From The Dark Ages.
Replies: 21
Views: 2975

Re: Progressing From The Dark Ages.

I see what Harold is talking about now. I had considered that "deflection", but I can see how it can also be properly referred to as "backlash". That's exactly why I, like RussN, always set the locks on the axis when milling. In fact, I lock the axis on all but the "active" axis (the direction of th...
by KellyJones
Mon Jul 20, 2020 5:17 pm
Forum: General Discussion
Topic: Split Cotters
Replies: 9
Views: 1205

Re: Split Cotters

OK - I'll bite. What's a split cotter? Do you mean a split "collar"?
Thanks for the clarification.
by KellyJones
Mon Jul 20, 2020 5:14 pm
Forum: General Discussion
Topic: Duburring Raw Stock
Replies: 14
Views: 1988

Duburring Raw Stock

Just received an order from a metal supply company. Some (newbie) observations: 1. Shipping took far longer than the junk my wife orders from QVC and the like. Part of this was it took almost a week to process the order internally and ship (at least judging from the email confirmations I received). ...
by KellyJones
Wed Jul 15, 2020 12:07 pm
Forum: Milling Machines
Topic: Progressing From The Dark Ages.
Replies: 21
Views: 2975

Re: Progressing From The Dark Ages.

I put a DRO on my mill about 5 years ago. Best tool I ever bought. My eyes simply couldn't read the dials anymore. Despite Harold's warning, I seem to have no problems with backlash. Perhaps I got lucky in the set up, but the DRO seems repeatable and accurate (within my needs, anyway). I wasn't awar...
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: 3125

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: 3125

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: 3125

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: 3125

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...