Search found 155 matches

by TRX
Mon Mar 30, 2020 6:49 pm
Forum: General Discussion
Topic: Thinking about cnc
Replies: 7
Views: 1356

Re: Thinking about cnc

Are you planning to write G-code by hand, or will you use CAD/CAM? If you haven't used any CAD stuff, be aware that most programs are driven entirely by tiny icons differentiated only by even tinier dots of color. If you don't have perfect color vision you may wind up having to memorize "six icons t...
by TRX
Fri Feb 28, 2020 8:37 pm
Forum: General Discussion
Topic: spring loaded tap follower
Replies: 12
Views: 3227

Re: spring loaded tap follower

Now make another plunger with a 60 degree countersink, for the occasional taps that have a point instead of a countersink. I have a bunch of those, all number sizes and <4mm metrics.

I took the easy route and bought a made-in-India cheapie off eBay; I wish I'd bought or made one long ago.
by TRX
Fri Feb 28, 2020 8:29 pm
Forum: General Discussion
Topic: LED Shop Lighting
Replies: 147
Views: 24072

Re: LED Shop Lighting

On the subject of failures I put 8' flourescents in when I built my shop in 1992. They cost a bit more than 4' shop lights, but the bulbs used spring-loaded "toilet paper roll" mounts; push, angle, release, and the bulb is in, much better than trying to twist 4' bulbs into positon while wobbling on...
by TRX
Wed Feb 19, 2020 3:15 pm
Forum: Milling Machines
Topic: Laser Align Round Head Mill Drill.
Replies: 12
Views: 2953

Re: Laser Align Round Head Mill Drill.

Try unbolting the column from the base, make sure there's no swarf or paint blobs trapped between the base and the bottom casting on the column. You might try re-indexing the column if that doesn't square it up. Note the quill might not be square to the column, either... you can check that pretty ea...
by TRX
Wed Feb 19, 2020 3:05 pm
Forum: General Discussion
Topic: LED Shop Lighting
Replies: 147
Views: 24072

Re: LED Shop Lighting

LED lamps for lighting wear out by slowly dimming (much more slowly than incandescents or fluorescents). End of life is defined as when the light output drops below a specified level. Incandescents simply quit working one day. The CFLs all died with, apparently, power supply failures - blackened ba...
by TRX
Fri Feb 14, 2020 3:11 pm
Forum: General Discussion
Topic: LED Shop Lighting
Replies: 147
Views: 24072

Re: LED Shop Lighting

Last year I bought a 6-pack of LED bulbs to fit my 4-foot shop lights. I finally got around to taking the first fixture down and apart. Hm. I have no idea how old it was, but the plastic ends were snapped into divots in the metal housing. Even with a long, thin screwdriver I broke most of the mounti...
by TRX
Mon Feb 03, 2020 4:09 pm
Forum: Lathes
Topic: Vee belts for lathe
Replies: 5
Views: 2346

Re: Vee belts for lathe

The link belts won't grip the pulleys as tightly in reverse, and can slip. The only time I've ever used reverse was when threading away from the headstock. That doesn't take much oomph. Note if you put new V belts on the Sheldon, it probably uses "industrial" or "compressor" belts, which are shallow...
by TRX
Mon Feb 03, 2020 4:00 pm
Forum: Lathes
Topic: Considering a DRO
Replies: 33
Views: 7784

Re: Considering a DRO

am considering putting one one on my lathe. I am a bit pressed for space for the cross slide Bought a brand new lathe last year. The budget would have stretched to DROs. I chose not to get them. The decision against the longitudinal axis was easy enough; I seldom machine anything length-critical in...
by TRX
Thu Dec 05, 2019 6:14 pm
Forum: General Discussion
Topic: Interrupted Cut Removes Tool Point
Replies: 27
Views: 4822

Re: Interrupted Cut Removes Tool Point

I bought some import "HSS" bits that looked perfectly normal, bright ground finish. They're apparently plain steel; aluminum will wear away the edge quickly, and they won't really cut mild steel at all, just gouging troughs after the edge rounds off.
by TRX
Tue Oct 29, 2019 12:07 am
Forum: Lathes
Topic: Winding springs
Replies: 16
Views: 6477

Re: Winding springs

If the spring is large enough you can bend the end coils with pliers so you don't have to grind as much. But it won't be a proper "closed end" spring.
by TRX
Mon Feb 11, 2019 9:40 pm
Forum: Gunsmithing
Topic: Enfield p14 question
Replies: 5
Views: 4626

In case you didn't know, Nicolaus & Associates has a book with the US Army Ordnance drawings for the P17.

https://www.nicolausassociates.com/M1917.htm

It has all the toleranced drawings, heat treat, and finish information to make a P17 from scratch.
by TRX
Tue Jan 01, 2019 3:27 pm
Forum: General Discussion
Topic: Speaking of Shop Realities ...
Replies: 25
Views: 7674

Re: Speaking of Shop Realities ...

When I need a 12" piece of 1" round bar, and the longest pieces I have on hand are 11-1/4, 11-1/2, and 11-3/4"...

It would be funny if similar things didn't happen so often. So a lot of projects start with "weld up two small pieces into a big-enough piece..."