Hi List i bought a Clarke Chinese 6" lathe a few years ago, the one with the milling head. It is not good enough for fine work but it will sure take the metal...
Does your lathe have a metric leadscrew or an Imperial leadscrew? I have read that cutting metric threads (often) does not allow you to disengage the...
One of the main problems with cutting metric threads is metric are defined by pitch whereas imperial are defined tpi. This means that any thread dial indicator...
In a message dated 11/9/2004 4:29:58 AM Pacific Standard Time, mlathemods@yahoogroups.com writes: I have read that cutting metric threads (often) does not...
Hi Richard and David i have always assumed that the lead screw was 3mm pitch but i have just measured it and it is 2mm, strange! The lathe is very basic, no...
Hi, a gearbox is not essential, and sometimes limits flexibility, where abouts in the drive train is the dog clutch? For it to always be in synch it would have...
Hi Frank the dog clutch is at the bottom end of the lathe, in line with the lead screw. The lead screw has a steel peg and the clutch has a sliding sleeve with...
... I have often heard this story about dog clutches offering a single point of engagement, which is true, and that this means you can't ruin a thread, which...
Thanks Brian, i was half way through my reply to Frank when it dawned on me that it might not be the lathes fault. It was one of those just out of reach...
... It's an old idea, and I can only do it at pretty low speeds, like 50rpm or less, else I get it wrong on at least one pass!. (I use yellow tape, it's a bit...
Brian i can see some light at the end of the tunnel now. Like i say, i had always thought the problem was with the lathe. Now things are clearer i can work on...
I am looking for stepper motors new or used, but in good condition. Does anyone have 2 steppers 200 step./rev.,single shaft(but double shaft will be...
HI all, does anyone know where I can obtain the design drawings the the Martin Cleeve Swing Tool Post Holder. I cannot find any reference to it except in the...
Garry It is the swing clear boring tool holder and is a replacement or adaptation for the rear tool post of the lathe. 116 2920 664 Cleeve Martin Swing-clear...
Hi, there all first post here, I have a Brittainia No.13 lathe and am in the process of restoring it. However there are some parts missing which i need to...
Have you looked at http://www.lathes.co.uk/britannia/index.html I didn't read it but maybe Tony can help, I bought a shaper manual from him about a year ago....
... I believe Britannia eventually became Colchester; in which case the changewheels would be 14DP, 14.5 degree pressure angle. Same tooth size as Drummond,...
There is a UK site http://www.lathes.co.uk/britannia/index.html giving details and online manuals for lathe manufacturers and type. This may be of some use to...
... restoring ... to ... around ... tumbler ... dont ... get ... to ... size ... is a ... Hi there, The pitch is 1/4" which belive would give a DP of 12.564....
simon, i think you will find that diametral pitch does not relate to screw pitch. for some good guidance in gear cutting try the mwmills2 list. one of your...
Hi joe, The 1/4" pitch im talking about is the Circular Pitch (CP) of the gears, ie one tooth every 1/4". The rack is the same. Diametral Pitch (DP) = Pi/CP if...
... Odd DP is suspicious, and I think unlikely. A reliable method if you have one changewheel, is to accurately measure the OD (at the top of the teeth), count...
I guess that didn't work ... From: Wm McNett To: mlathemods@yahoogroups.com Cc: 7x24Mini-LatheCNC@yahoogroups.com Sent: Friday, November 26, 2004 3:08 AM ...
... Bill I suspect the mlathemods group is set up to strip attachments from submitted emails (to reduce virus risk). If you post the file to the group archies...
Pic uploaded to pictures folder. no dimensions but I'll get them. ... From: Tom Wightman To: mlathemods@yahoogroups.com Sent: Friday, November 26, 2004 12:00...
Hi, I found this group after visiting 'Little Machine Shop'in their links section. I've had an Enco 7x10 for about a year. I'm suprised at its capabilities,...
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