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Member postings for Lainchy

Here is a list of all the postings Lainchy has made in our forums. Click on a thread name to jump to the thread.

Thread: Resurrecting an old model
01/11/2021 16:32:34

Test IPA on a small area first.... it may soften paint. White spirit is what we use on the big stuff.

Looks great though!

Thread: Engineering Courses - Midlands
19/04/2021 15:12:40

I'm booked on the welding course, although they have postponed by one week. It starts next week now, but I believe they have 5 people on there so far.

12/04/2021 15:34:52

I've just just signed up for their introduction to welding Cannock. Bit more expensive, but covers Arc, MIG and TIG. Got to pay for the materials I guess.

Looking forward to it

Thread: Stuart No1 valve details
28/03/2021 14:22:43

Perfect JasonB. Many many thanks.

That's much appreciated.


28/03/2021 12:40:11

We have a built but not fully running No1. Could anyone share the ports face and valve dimensions, or drop me a PM with the details?

Many thanks


Thread: Engineering Courses - Midlands
26/03/2021 13:16:37

This looks great for beginners Colin! Ideally located also for me, albeit that I can turn and mill now. A friend may be interested though and if he attends, I may too... just in case something else can be gained... it's cheap enough!

Many thanks

Thread: Axminster tools to discontinue their engineering courses.
16/03/2021 06:47:11

I do hope Bob does set up his own course... He was excellent on the Axminster one. A really good tutor. If nothing else, I got a huge amount of safety info from doing it which I thought was invaluable. Hitting dimensions comes with practice, but there were some great tips.

Thread: Where to find a *good* optically flat mirror?
24/02/2021 07:05:48

Have a look at Orion optics in Crewe.

Thread: Make-shift surface grinding of a threading die face
22/02/2021 11:40:29

Looks fine Jason. I'd wondered if you'd built some sort of grinding jig for the toolpost.

Many thanks

22/02/2021 10:29:13

I have exactly this issue on a very small part that requires 7/32x40ME... It only projects about 3/32nd - 1/8"

Did anyone manage to grind or mill out the lead out from a carbon steel die?

I notice also the post from Greensands... my brass hex external is 7/16. I'm guessing I could make just a 7/32x40 threaded bar, and silver solder a 7/16" brass nut to it. Got me thinking, but.... bit annoying that I can't just buy one as needed.

Cheers chaps

Thread: WM180/DB7 mini lathe to cut 32TPI
16/02/2021 14:32:31

I go to the LittleMachineShop website, "Learning Centre", "How to Articles", then "Change Gears for Threading" as my starting point. It is for a Mini-Lathe with only a 2 train gear set, not the 3 train that you need for your lathe. But in conjunction with your threading table, it gives a good idea what you need. I'm afraid it does not do it all for you, you still have to fiddle with the gear sets to get a good arrangement.

Some Imperial TPI could probably do with having additional gears to those that you have, something for another day perhaps.

I hope it all works out.


Cheers Neil. I'm still learning - 18 months in maybe, so this is helpful

16/02/2021 08:36:11

Many thanks Neil. I don't know how you guys work it out!

Many thanks


Thread: Jacobs Chuck run out
15/02/2021 20:50:04

I'm interested in this... I've just replaced my Warco mini mill B16 1-13mm chuck with a new Jacobs, which I don't think is as good as the old Jacobs chucks... is there a set distance to measure run out from the jaws, as obviously, the further you go from the jaws, the larger the error??

Thread: WM180/DB7 mini lathe to cut 32TPI
14/02/2021 20:45:59

Ah yes, just checking and indeed.... that would be 40/80, 40/80, 20/50. I'm guessing it would still fit, given that it's on the chart. I'll take a look at this also Neil. Going to be tail end of next week to get the gears off. 

Many thanks


Edited By Lainchy on 14/02/2021 20:50:52

14/02/2021 19:24:36

Superb JasonB Many thanks.

I'm gonna sit and work that out too. First time I've gone off the stock and it had me totally flummoxed, especially when I was struggling with the online tools too.

Many thanks !


14/02/2021 19:15:36

The 0.8mm pitch maybe close looking at it. Very short length of thread needed... maybe 3/8 tops.

25.4 /32 gives me 0.79375. 0.006mm short. That's pretty close maybe?

14/02/2021 18:52:59


Edited By JasonB on 14/02/2021 19:19:09

14/02/2021 18:49:24

Redsetter... That's true! Will check if I have a split die for that and try on a piece of scrap.

JasonB... will do. Bear with. Lathe is Metric, but I believe the leadscrew is the same on both.

14/02/2021 18:39:55

Fixed gear on headstock Spindle is 40

Selection of available.... 20,30,33,35,40,42,50,52,60,75 and 2x 80

Thanks chaps

14/02/2021 18:22:52

I say the lead screw is 12TPI based on searches, but in the manual, I've just found 2mm pitch.

Calculations of some of the stock setups, give the following

40 TPI

40/60 = 0.6666
60/52 = 1.1538
33/80 = 0.4125

0.6666*1.1538*0.4125 = 0.3172
0.3172*40= 12.688

28 TPI

40/80 = 0.5
80/33 = 2.4242
30/80 = 0.375

0.5*2.4242*0.375 = 0.4545
0.4545 * 28 = 12.72

..... so maybe the leadscrew pitch is 12.7 per inch?? Seems a strange pitch though?

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