Peter E - Light Duty Live Center w Changeable Tips

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DaveH:
Peter,

That is a very handy piece of kit you've made - will come in very useful :thumbup: :thumbup: :thumbup:
:beer:
DaveH

PekkaNF:
Very nice work. Also enjoyed your reasoning and solutions.

Any change for additional photos on remaining interchangeable tips? I can vision them but everyone has some design ideas.

Pekka

Fergus OMore:
As an owner of a MJ189, I also enjoyed your additions to your tooling.
Might I mention that a Reg Tingey also wrote up how to make up accessories in his Making the Most of the Unimat. This is now out of print but it is copied in the YahooGroups Unimat forum.
True most of it is dimensioned for the original SL but a downloaded copy can be most useful.

I bought my machine together with a host of accessories really for the time when I was somewhat older( I'm only 82) from an old chap who went into residential care.

Cheers

DaveH:

--- Quote from: Fergus OMore on June 28, 2012, 10:35:18 AM ---I bought my machine together with a host of accessories really for the time when I was somewhat older( I'm only 82)
Cheers

--- End quote ---

Hi Norman,
Good for you :thumbup: :clap:
:beer:
DaveH

PeterE:
Thanks a lot everyone!

@Pekka: The other tips will be made according to or very nearly the early drawings below. I have not yet had time to make them, but they and the little wooden tray will be made during my upcoming vacation :D

The tips.

Please note that the outer diameter of the shanks now are 12 mm diameter instead of 10. This as I found during work that 12 mm would be far better for the needle roller thrust bearing I had and still make the brass bearing steady enough. A suitable material for the tips or tip shanks would be 12 mm dia silver steel (drill rod) as it is precision ground from start and thus only need "end manufacturing" which simplifies a lot.

Tip no 2 now tapers from 6 to 10 mm diameter, but when it increase to 12 mm I will make the tip with a straight turned-down part at 6 mm diameter and let is taper quickly (30-ish degrees) to the 12. This will make a center small enough to allow tools closing up to a work piece end.

Also, as you have already seen, the chuck attachment is drilled out in the same manner as the Unimat tailstock.

The sketch for the wooden storage block layout will look something like the following.

I hope this may trigger a though or two.

@Fergus: I have been on the look-out for Rex Tingeys book but not yet found it. I have heard that it contains many useful small items for the Unimat/MJ-189, and probably also the SIEG C0 range machines. Must look through the Unimat forums files and see if I can get hold of a copy (tahnks for pointing that out :thumbup: ).

As said at the beginning, I made much the same set of tips from the Bob Loader book and they turned out as below.

BR

/Peter

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