B.C.A Jig borer VS Warco WM12

Many thanks from me too, Jake

MichaelG.

Thank you Jake.

I am not sure but suspect mine is a Mk2 then, as I did measure the table-travel (hence maximum radius) this evening and it is only about 3.5". Even so the Mk.3 manual is probably applicable in most details to the Mk.2.

I measured it after I'd used it to flute the rim of a handle-wheel shown knurled in the drawing, but too large for my knurling-tool.

A very basic task for it, but if you like a beginners' one as I've only just started actually using it, so still learning my way around it.

Can anyone reconcile this apparent contradiction, please :

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MichaelG.

Yep Micheal,

Great isn't it! really clear and concise telling you what to pump the most critical part with!

I have just used spindle oil(same as the super 7) as to my mind it works better with the bushes, the only problem is it doesn't really stay in the bearings too well ( theres a black line on the blinds behind the machine!) , so I guess they mean almost a sticky combination between a grease and an oil. I did look up modern equivalents to shell etc and I can not quite remember off the top of my head what I found I think it said something about 16 weight oil.

Jake you lucky devil did you get the manual from your mate? If you did I envy you. Thanks for publishing it on here.

Treasure it as they are like rocking horse doodahs. I have a reprint from lathes.co.uk, which is made up of what you have and a load of adverts etc. It may be worth getting in touch with Tony with that pricelist, the reprint only has one from a MK2.

William

The Vitrea range of Oils having been discontinued ...

This is a handy reference : **LINK**

https://www.lubefinder.com/range/shell-vitrea.html

MichaelG.

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P.S. __ If anyone is wondering about DYN metal :

https://www.dynmetal.co.uk/about-us

Edited By Michael Gilligan on 23/02/2021 09:15:06

Just spoke to Tenga this morning following their advert in back of ME regarding stock clearance. I would have liked a 3/8"threaded collet but the last one went a few weeks ago and they are not having any more Imperial ones made. They could offer me a Metric 6 or 10mm threaded. How does £195 each plus VAT and postage sound. I politely declined the offer.

Colin

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When I bought the 3/8” version [about 35 years ago] it cost me £33 ... which is the price quoted in the list that Jake shared ... I couldn't afford to also buy the 10mm

So, basically: unsurprising.

MichaelG.

Its now getting to the point where it is nearly worth buying a complete machine if it has a decent set of collets with it, and keeping most of the collets and selling the machine on with just a few.

If no more of the internally threaded ones are being made it puts the resale value of those up quite a bit.

I wonder if there are any enterprising folks on here that could set up to produce batches of BCA collets for us.

Phil

I should just mention, Phil

The original collets were superbly made, by Crawford

If I recall correctly, the 'model' is No. 55, and was originally used on a Lorch machine.

< feel free, anybody, to correct me on this ... I can't access my notes at present >

MichaelG.

Hello Ian

I can expand a bit more however I'm going to disappoint as it wasn't a collet I made, it was a sidelock cutter holder:

Those are what I made, They have 1/4" and a 6mm dia hole to suit the fc3 range of cutters, they could also be used to hold any other cutter if one was to grind a little flat to allow the grubscrew to retain them.

I will make more with a smaller range of holes- 3mm /4mm /5mm /1/8"/ 3/16" etc as they work well especially with carbide end mills

They are not to difficult to produce just turn the o.ds between centres, this enables a batch to be done(angle/screw thread etc) with minimum of fuss, Then clock them up in the 4 jaw chuck to bore the end. This has been documented over on modelenginemaker I belive.

Collets are largely the same I belive, however a front portion is left on until the very end, I have read the process on another forum I think.

I hope this helps

William

Hi William

Thank you very much for replying to my question - I really appreciate the help! I really like what you have made here and am keen to give this a try. I will also try and see if I can find further references on another forum to see if I gan garner any more tips.

Again - many thanks.

Ian

This is about making ER ... but the general methodology should read-across

**LINK**

https://www.fingers-welt.de/info/Drehen/16erSpannzangen%20C8.pdf

MichaelG.

That is very helpful, thank you Michael.

Just googling Tenga is not likely to help with jig borers, I suggest Tenga engineering or machines will be more helpful.

Mike