Search found 9 matches

Return

by mrfoo
Fri Jan 03, 2020 12:20 pm
Jump to forum
Jump to topic

Re: I see we have a new skin …

How do we stop being automatically subscribed to threads we reply to? I don't want to get an e-mail for every reply... Board preferences > Posting defaults > notify on reply by default It was incredibly painful in the past to change things, as SF has historically had lots of customization. This new...
by mrfoo
Sat Jan 18, 2020 7:22 am
Jump to forum
Jump to topic

Re: "In the world of spuds today"

The one I linked to has the benefit of the vise screw claming downwards, preventing the jaw from tilting when it is tightened. It's rather small though, 4"or 6" would be better. I do all my milling on the lathe, which means it's all a bit restricted in terms of space, I clamp onto a plate on the mi...
by mrfoo
Sun Jan 19, 2020 1:31 pm
Jump to forum
Jump to topic

Re: "In the world of spuds today"

Yep, that looks about right as far as lever indicators go. You'll probably want a plunge indicator as well, though. And a couple of mag bases. Then you can make up some indicator holders for the lathe toolpost, and maybe one to clamp to the ways. For tramming the mill, all you really need is a piece...
by mrfoo
Sun Feb 16, 2020 1:40 am
Jump to forum
Jump to topic

Re: Low-friction/Specialty Ball Valves?

Here's one, for example : https://www.valvesonline.co.uk/manual-v ... l-bkh.html

Relatively cheap, pom / molybdenum disulphide seals, rated for 500 bar.
by mrfoo
Mon Mar 09, 2020 2:12 pm
Jump to forum
Jump to topic

Re: JSR's workshop chronicles

It's almost certainly due to burrs or shite geometry, but it could be problems with the handwheel, bent screw, etc. First thing to try would be to remove the handwheel parts entirely, reassemble the rest of the slide, adjust the gibs to "close enough but a bit slack" and see if you can slide it smoo...
by mrfoo
Wed Mar 11, 2020 12:13 pm
Jump to forum
Jump to topic

Re: JSR's workshop chronicles

Oh, my. That's shit design. Really shit design. What I'd probably do, if possible, would be to find a way to position and then block #25 exactly where it should be, /temporarily/, then drill and ream for a couple of locating pins to hold everything square. You can then enlarge the bolt holes if nece...
by mrfoo
Fri Feb 21, 2020 12:48 pm
Jump to forum
Jump to topic

Re: JSR's workshop chronicles

was pleasantly surprised to find it very clean. That's good news. the deals online were just so much better if one is prepared to wait a little. Personally, I'd rather have second hand quality gear than brand new chinesium, even if it comes in more expensive. But usually, it doesn't, even if it doe...
by mrfoo
Thu Mar 12, 2020 1:32 am
Jump to forum
Jump to topic

Re: JSR's workshop chronicles

Nothing wrong with low tech at all. The only real problem with digital caliper DROs apart from the small readout (and that can be taken remote with a bit of work and an arduino) is refresh time; rather than emitting a quadrature signal in real time there's a sample output every x milliseconds, which...
by mrfoo
Mon Mar 16, 2020 2:32 am
Jump to forum
Jump to topic

Re: Short question topic

Porting and piston form is going to be important to get air out of a short, squat, cylinder into a long, slender, barrel in a hurry. The big issue is, IMO, going to be changing the direction of the air, as such I'd probably go for a conical piston face mating to a conical cylinder end, with highly r...