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HAS ANYONE MADE A SINE BAR ?

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RICHARD GREEN 209/11/2019 15:24:44
310 forum posts
183 photos

Has anyone made a sine bar ? or even a sine table ?

Richard.

Chris Evans 609/11/2019 15:29:14
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1625 forum posts

Yes several over the years. Most used are a 2" and a 3", very handy in the vice. 5" good on angle plate set ups.

I have a 10" sine bar free to anyone who wants it, just cover postage. Chris.

Tony Pratt 109/11/2019 16:31:10
1094 forum posts
3 photos

Yes made several over my Toolmaking career & do know how to use them.

Tony

not done it yet09/11/2019 16:35:40
4471 forum posts
16 photos

Chris, you have a PM.

Thor09/11/2019 16:42:28
1205 forum posts
37 photos

Hi Richard,

I made a sine table some years ago, look here.

Thor

John Hinkley09/11/2019 17:17:40
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844 forum posts
286 photos

Richard,

I haven't personally, but this series of videos are a good way to pass some time

Stefan Gotteswinter's sine bars

It's easy to get hooked on his videos and I've lost a lot of workshop time doing just that.

John

Emgee09/11/2019 17:43:42
1438 forum posts
212 photos

Made a sine table with castings and plans from Dave Lammas, it's served me well over the years when called on for a special set-up.

Emgee

see an earlier thread:   Tilting Table Kit?

 

 

 

 

Edited By Emgee on 09/11/2019 17:49:22

old mart09/11/2019 19:30:09
1479 forum posts
136 photos

I bought two on ebay, a common size 5" and a baby 2", they are beautifully made, either toolmaker or apprentice made. To make one, you would need a lathe, a mill, a surface grinder and a cylindrical grinder, plus heat treatment equipment for the intermediate stages.

Many years ago at work, I found a strange tool in a job lot of stuff they had bought, and one of our apprentices recognised the general shape as being that of a sine bar, but it was not straight. The body was about 5 or 6 inches long and the curve of the body was about a two foot radius. I did not know what a sine bar was at the time, but I remember it very well, and the lad was not winding me up. I posted on the H S M forum about it a year or so back, but nobody had ever heard of a curved one. I don't remember if there were any means of attaching it to something being machined.

David George 110/11/2019 07:18:34
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1185 forum posts
397 photos

I made a 2 inch sine bar a while ago and it was published in the No 280 MEW magazine with drawings etc. I use it for setting the top slide of my lathe, against an angle plate for plates with an angle and in the vice for round and square pieces. A sine table I have made in the past but when at work on huge machines the last one was about a meter square and about half a meter tall. You need a large machine to use a sine table.

David

Edited By David George 1 on 10/11/2019 07:28:10

Stewart Hart10/11/2019 08:16:08
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Moderator
627 forum posts
334 photos

Yes I made a 100mm one this makes the calculation easy my version is different in that it has a swivel base, this also makes it easy to set up. I submitted an article to ME workshop but as yet its not been published if any one would like a set of drawings just PM me.

Stew

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Neil Lickfold10/11/2019 10:04:56
590 forum posts
102 photos

It is nice if it is a nominal number for the centre distance to the rollers or roller to centre in a sine table. But the important part is knowing what that centre distance actually is, then it will be as accurate as possible. Having support side arms to aid in keeping it's correct position is a really good idea. Then the gauge blocks don't need to be kept in place. Of course there are many way's to setting the height for sine tables and sine bars.

Neil

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