Bed regrinders?

[Andrew TinsleyParticipant @andrewtinsley63637]

Hello,

I should be picking up a Myford ML7 bed in the next couple of weeks. I have a local guy that can do a regrind. However I would like to know of other firms that could do the job. Quality first, price second!

Andrew.

[Andrew TinsleyParticipant @andrewtinsley63637]

[Andrew TinsleyParticipant @andrewtinsley63637]

Seems odd that no one has had a bed regrind or knows of someone that has. The Nuneaton guy seems to be most mentioned, anyone care to pass on their experience via a PM?

Thanks,

Andrew.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Andrew Tinsley on 07/05/2017 11:39:23:

Seems odd that no one has had a bed regrind or knows of someone that has.

.

Not quite, Andrew ^^^ … but it seemed rather pointless telling you that Myford at Beeston did a very good job for me [on a non-Myford bed]

MichaelG.

[John CParticipant @johnc47954]

Brian Caddy of Slideway Services did my Super 7 bed and saddle. Excellent job.

John

[Neil WyattModerator @neilwyatt]

Laurie Leonard had his Myford's bed reground, he details what was involved in the regrind including dismantling and rebuilding/realigning the lathe in the most recent issue of MEW, number 254. It should still be available in WHS for another week or so.

Neil

[HopperParticipant @hopper]

Have you actually determined that the bed needs regrinding? A lot of "worn out beds" are mostly the headstock bearings and carriage dovetails worn. If you measure the lathe bed and the vertical thickness of the front shear is within five thou or so but the width is worn more, you can probably get away with doing the "Wide Guide" conversion, for the the cost of a short piece of 1/16" x 1/2" gauge plate. You pin it or glue it in the rear of teh carriage dovetails so it bears on the back of the rear shear, which is unused and therefore unworn, on the pre-1970s models that did not come standard with the "wide guide". The worn out front vertical shear is then left unused after the conversion.

[Andrew TinsleyParticipant @andrewtinsley63637]

Hello Hopper,

I have not set eyes on the bed yet, but the gentleman who is letting me have it for scrap value, seems to think it needs a regrind. Certainly there are hacksaw marks on the bed from a previous owners crude parting off! The chap who is letting me have it sounds a very knowledgeable type so I assume he is correct!

I would be doing the wide guide conversion as a matter of course, it is an excellent mod, which I have done before.

I will report back when I have the bed.

Andrew.

[HopperParticipant @hopper]

Ah, well now, scrap value, sounds like you are doing well. Man after my own heart and all that! A few hacksaw marks will not do any harm. They retain a bit of oil if anything. Smooth the edges off and carry on. You'll soon measure the wear with a standard 0-1 mike when it arrives. Thickness of the front of the front front way six inches out from the lefthand end compared with the far righthand end will pretty much tell you in a heartbeat if a regrind is imminent in your life. Further confirmation with a straight edge and feelers is always a good move though, just in case the gods of straightness are smiling on you through the clouds.

[Andrew TinsleyParticipant @andrewtinsley63637]

Hello Hopper,

You may well be correct, from what was said, it seems to have a hard life. We shall see when I pick it up. Knowing my luck it will be in need of a regrind. When fettled either way, it will be a present to a disabled friend of mine who keeps going through model engineering. His bed was trashed when an RSJ fell on it from a goodly height! Good job he wasn't using it! I have lent him my ML10 while I sort out a bed for him!

Andrew.

[HopperParticipant @hopper]

Posted by Andrew Tinsley on 10/05/2017 16:23:35:

Hello Hopper,

… His bed was trashed when an RSJ fell on it from a goodly height! Good job he wasn't using it! …

Andrew.

Yikes! Good thing, yes. Must have been a very goodly height, or very large RSJ to bend a lathe bed out of shape.

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