Search found 6738 matches

by spro
Sat Oct 20, 2018 9:13 pm
Forum: General Discussion
Topic: rubberflex collets for model 50 chuck
Replies: 3
Views: 290

Re: rubberflex collets for model 50 chuck

It appears the Jacobs model 50 uses series 500 collets. These have protruding outer jaws. My stuff is 900 series and the ranges are similar but the collet dimensions probably aren't. I roughly measured the length, OD of the widest tapered jaws and OD of the smallest part of the tapered jaws. I used ...
by spro
Fri Oct 19, 2018 3:08 am
Forum: Milling Machines
Topic: Wavy Parallels. What are they good for?
Replies: 4
Views: 421

Re: Wavy Parallels. What are they good for?

I haven't yet owned them but see they are useful. Straight parallels are very thin and in setting up, tend to tip. I would select a spring to locate them against the jaws. The wavy ones seem to have an advantage there. Also when milling atop a fixed part, there is more support.
by spro
Fri Oct 19, 2018 2:48 am
Forum: General Discussion
Topic: Wooden Grinder Spacers
Replies: 6
Views: 427

Re: Wooden Grinder Spacers

If we look at the construction of one wagon wheel of 150 years ago; There is a certain hub which was old hard elm with wavy grains which wouldn't split. The spokes were different for pressure and the rims something else when banded. Each wood has its own characteristics and they knew how to put them...
by spro
Fri Oct 19, 2018 2:33 am
Forum: General Discussion
Topic: Wooden Grinder Spacers
Replies: 6
Views: 427

Re: Wooden Grinder Spacers

There was certain wood for every use and how another wood fit with it. They have their different grains and wear factors. This is a big subject but now I say stick with metal when using metalworking machines.
by spro
Thu Oct 18, 2018 12:16 am
Forum: Lathes
Topic: Jet 1336 PBD Lathe
Replies: 26
Views: 10602

Re: Jet 1336 PBD Lathe

Mine isn't exactly yours but I have read there are hidden screws or clips. At this point, you may inspect, lube and reset the pre load of those rather large bearings. The bull pulley has an oil port accessed by a screw between some Vee and it will line up with another-but- this may be different. If ...
by spro
Wed Oct 17, 2018 4:07 pm
Forum: The Junk Drawer
Topic: What is This Thing?
Replies: 10
Views: 516

Re: What is This Thing?

Anyway. It is a thing which you don't want to take head off just now. Plenty of water now but who knows about next year's drought. Stick a little wire flag pole next to it, so don't mow it down.
by spro
Tue Oct 16, 2018 4:51 pm
Forum: General Discussion
Topic: Introducing my son to machining.
Replies: 7
Views: 519

Re: Introducing my son to machining.

I'm a wanderer off a distinctly good thread here. Mr. Atunguyd, salute to you and your son. These are the times where he really learns and has a jump start over conceiving without actually knowing how to get there.
by spro
Tue Oct 16, 2018 4:38 pm
Forum: General Discussion
Topic: Introducing my son to machining.
Replies: 7
Views: 519

Re: Introducing my son to machining.

Well, far as I know Fein was the first. The patent expired or anyway, everyone got into making copies. Hospital use was cutting casts off. I had to believe how neat that was. These are great tools because they work differently than any other. I did the same thing Steve G did some years ago. I had cr...
by spro
Tue Oct 16, 2018 4:12 pm
Forum: General Discussion
Topic: Layout dye
Replies: 22
Views: 1126

Re: Layout dye

I regret my earlier post about blue dye. I've never used "dye" but Prussian Blue and Dykem. So the post was based on neither directly and falls into the category of rhetorical hyperbole.
by spro
Tue Oct 16, 2018 4:03 pm
Forum: General Discussion
Topic: Layout dye
Replies: 22
Views: 1126

Re: Layout dye

One area of my basement shop had similar treatment. I don't remember why that can of white paint was sitting there. I was actually cleaning and that can hit some object on the floor. It started spewing paint everywhere. Got white stripes across machine bases, tooling, etc.
by spro
Mon Oct 15, 2018 9:34 pm
Forum: General Discussion
Topic: Layout dye
Replies: 22
Views: 1126

Re: Layout dye

I just use the blue in smaller tubes. It does separate over time or temperature extremes. I try to knead it, remix it. It is tempting to remove the cap but that isn't air in there. It is a chemical component of the mixture which vaporized.
by spro
Sun Oct 14, 2018 10:15 pm
Forum: General Discussion
Topic: Repainting equipment
Replies: 5
Views: 580

Re: Repainting equipment

Really good recent information. Thanks Ed.