Internal slotting on a shaper

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Charles Ping - 30 Jul 2004 13:28 GMT

I'm about to slot the inside of some gears on the shaper.
Some books (notably Ian Bradley) suggest that the clapper box should be
clamped shut and the cut made on the return stroke. Others suggest
producing the cut on the outbound stroke.

Which method do you use? Bear in mind it's an Alba 1A (ie quite solid
but not very big really!)

Thanks

Charles

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Peter A Forbes - 30 Jul 2004 19:40 GMT

>I'm about to slot the inside of some gears on the shaper.
>Some books (notably Ian Bradley) suggest that the clapper box should be
[quoted text clipped - 7 lines]
>
>Charles

I don't use either, but I'd have thought that both methods have advantages,
depending on how you set it up and how the tool clears on the non-cutting
stroke.

Cutting on the out-stroke tends to be the way the machine is made to work and
any looseness in the machinery is taken up, while on the return stroke you make
end up with a lot of noise etc.

Just my thoughts...

Peter

--
Peter & Rita Forbes
diesel@easynet.co.uk
Engine pages for preservation info:
http://www.oldengine.org/members/diesel

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John & Pat - 31 Jul 2004 04:32 GMT

Hi Peter
For what its worth I suggest the return stroke cut with clapper box locked
is the best approach/option as the slotting tool will not be inclined to dig
in, but instead spring away from the work. I suspect this may have been the
thinking behind Ian Bradley's advice.
Regards
John Bates
Sydney, Australia

> >I'm about to slot the inside of some gears on the shaper.
> >Some books (notably Ian Bradley) suggest that the clapper box should be
[quoted text clipped - 25 lines]
> Engine pages for preservation info:
> http://www.oldengine.org/members/diesel

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John Stevenson - 31 Jul 2004 12:06 GMT

>I'm about to slot the inside of some gears on the shaper.
>Some books (notably Ian Bradley) suggest that the clapper box should be
[quoted text clipped - 5 lines]
>
>Thanks

Charles.
I'd try both methods on a similar piece of material, then choose.
It's not always a given method that works every time.
Your choice of material may play a deciding part in which method gives the
best results over any ones advise.

--
Regards,

John Stevenson
Nottingham, England.

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Model Forum / General / Models / July 2004

Internal slotting on a shaper