Taper attachment question

[Abody711]

Bought a South Bend taper attachment. I noticed the piece that attaches to the side of the apron saddle has the two bolt holes but not the two locator holes. Do I drill locator holes or do I remove the pins?

 

[MrWhoopee]

The pins are to ensure that it goes back exactly when removed and re-mounted. Once you have it properly mounted, the holes should be drilled & taper reamed (the pins are tapered I believe).

 

[benmychree]

I assume that your lathe did not come with a taper attachment, but the bolt holes were there from the factory, yes the pins are important especially to keep alignment of the cross feed screw.

 

[SLK001]

The pins are there because of the complicated procedure to mount a taper attachment. Once you get it correct, you'll want to be able to remove and remount the TA with little effort.

 

[benmychree]

The pins are there because of the complicated procedure to mount a taper attachment. Once you get it correct, you'll want to be able to remove and remount the TA with little effort.

Once mounted, there is little reason to remove it; the TA has two valuable functions, that of cutting tapers, and its weight to help to hold down the back of the saddle.

 

[SLK001]

Once mounted, there is little reason to remove it;

Agree.

(T)he TA has two valuable functions, that of cutting tapers, and its weight to help to hold down the back of the saddle.

There's also a gib back there that provides most of the hold down power.

 

[benmychree]

Agree.

There's also a gib back there that provides most of the hold down power.

On an older worn machine, the gib does little holding down without causing binding closer to the tail end.

 

[bac1972]

View attachment attachment 1.pdfHere’s the instructions for fitting the attachment.


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[Abody711]

View attachment 411969Here’s the instructions for fitting the attachment.


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Thanks for the information. Found a clearer copy of the form at http://vintagemachinery.org/pubs/1617/17785.pdf

 

[SLK001]

Thanks for the information.

You neglected to tell us what lathe you have, so the pertinent installation instructions can't be resolved.