Member postings for elanman

Hi,

I have a 1992 A1S which has the same or very similar vertical head.

I did not like the backlash or the garden gate type return spring. So I fitted two clock type coil spring that pull the quill upwards by the stop block. The springs rotate a shaft that pulls on some shim SS to pull the quill upwards. This removes the backlash and gives a lighter feel when drilling. I also have down feed for boring holes.

I'll try to post some pics to give you more idea.

Cheers

John

Edited By elanman on 24/03/2020 17:37:25

When I had a Colchester I had the same issue, I TIG welded the top of the splits up. They lasted 20 years till I sold the lathe.

Cheers

John

Nigel,

Yes I have also found the Heidenhain service dept very helpful, but only on DRO display issues. Both times I've had scale problems I've told to use the agents. This was a good few years ago so things could be different now.

Cheers

John

Be very careful who you deal with, I got well turned over when I sent one of my scales to an Heidenhain agent for repair. They had said on the phone that it would be repairable then when it came to fixing it they just wanted to sell me a new scale. Make sure you get a quote before you get too deep in.

The good news is that EMS-i sell compatible scales with the round plug on. Not super cheap but about 25% the cost that the Heidenhain agents were offering. More important was the fact that EMS-i were really helpfull to deal with.

In this day and age you may well be able to get a whole new setup for no more than the cost of repair of the scale. And if you only have a simple DRO at the moment you will get a lot more features.

I don't seem to be able to paste a link but you can google EMS-i

Cheers

John

Edited By elanman on 31/08/2019 13:53:08

Edited By elanman on 31/08/2019 13:55:43

When I needed some for my new tool holders I made them out of coach bolts.

Cheers

John

Canobi,

From the data of my Mk2 DW the bore on the inner drive sleeve should be bored right through. So the bushes should not be up to a sholder. Is there just a spacer between the bushes?

Your main spindle is standard (I think). However the tang on a standard MT drill chuck does need chopping off as there is no slot for a drift to eject the chuck. MES did recommend making an ejection nut the fit the Myford chuck thread.

Cheers

John

Edited By elanman on 18/08/2017 21:48:32

Edited By elanman on 18/08/2017 21:50:36

Edited By elanman on 18/08/2017 21:51:27

Edited By elanman on 18/08/2017 22:05:39

Yes I have a RDG one, as Nick said when supplied it did not refit true. This was due to the tapered bore being too small, had to scrape it out so that it fitted properly. I should have sent it back but it was easier to fix that problem than post it back.

I know not to buy another from them.

Cheers

John

Chris,

MEW no 110 has an article on the very subject.

Cheers

John

Dave,

All the info you need is in MEW No.110. That issue also has some good info on making toothed belt drives which might be useful.

Cheers

John

Dave, Graham,

Some years ago there was an article in MEW on motorizing a tailstock hand wheel. It had all the ingredients you need to make it and could be adapted to suit your needs. I'll try and look it out tomorrow, unless anyone else can come up with the MEW number first.

Cheers

John

Graham,

If you said where in the world you are people would be able to help more.

If you are in the north east of England try M machine in Darlington. (01325 381300) They will post but buying locally saves on postage.

Cheers

John

Luke,

I would approach with a bit of caution. A 1800 could be at least 27 years old and Colchester's wear out just as any other machine tool. If it's had a hard life it's fit for scrap, a good one would make a nice purchase though. It all depends on price, condition and what you want to make with it.

Of the two models mentioned, buy the one in the best condition.

If you need spares from 600 Group they are VERY expensive.

If you can get the serial number 600 Group should be able to tell you how old it is, a good dealer may well have done this for you.

Cheers

John

Edited By elanman on 02/03/2013 16:09:47

Paul,

A quick search give this:- http://www.gwr-fasteners.co.uk/m8-metric-fine-pitch-10-grub-screws---high-tensile-149---5-pack-14458-p.asp

I have not had any dealings with the firm.

Or you could try Hawk Fasteners on Teesside who are very good. I don't think they offer a postal service. (0)1642 468581

Cheers

John

Hi,

For work on carbon you need a carbide or better still a diamond cutter as HSS has a very short life. Another way I have found OK is to make a solid point on a piece of MS or alloy bar and super glue some wet and dry abrasive paper to it. It does not last long but it's cheap and the paper is easily replaced. When counter sinking I use a hand brace, that's fast enough.

Cheers

John

Edited By elanman on 19/02/2012 17:02:12