Checking a tapered reamer

Attachment 49496
I wanted to see whether these two old reamers had been reground to a morse taper.
I do not know of any other way to do it easily, so I made this jig.
Attachment 49497Attachment 49498
Firstly I scribed a line on a piece of MDF. Then I took a small disc, about 1/2” dia and screwed it to the line at the right end. Then I took two handy pieces of angle iron, salvaged from something, screwed them down with washers to stop them rising from the pressure of the clamp. Then I put in an old no.3 morse taper sleeve, tapped it along, tight. Then I clamped the bars together. Another disc, about 1&1/4” dia was pushed in from the left as far as it would go, then screwed down on the central scribed line.
That completed the jig. Trying the reamers, you may just see at once that they are not morse taper, but never mind.
Attachment 49499
If it had seemed a good fit, I would have tried one of these:
Attachment 49500
Can’t remember at present what it’s called!

If you have a pair of 1-2-3 blocks, it's easy to accurately measure the taper...

https://www.homemadetools.net/forum/...5135#post81233

then compare to tapers in Machinery's Handbook.

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Thanks Philip Davies! We've added your Tapered Reamer Jig to our Measuring and Marking category,
as well as to your builder page: Philip Davies's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-tapered-reamer-jig"> <img src="/uploads/276081/homemade-tapered-reamer-jig.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-tapered-reamer-jig">Tapered Reamer Jig</a> <span> by <a href="https://www.homemadetools.net/builder/Philip+Davies">Philip Davies</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/jig'>jig</a>, <a href='https://www.homemadetools.net/tag/reamer'>reamer</a>, <a href='https://www.homemadetools.net/tag/measurement'>measurement</a> </div> </div> </div> </div>
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Quote:

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Originally Posted by Philip Davies

If it had seemed a good fit, I would have tried one of these:
Attachment 49500
Can’t remember at present what it’s called!

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Feeler gauges.