Member postings for Paul Boscott

Hello Mark

One of the possibilities may be that the split die is not adjusted correctly you should test the setting by running it down an existing 3mm thread.  It should be just tight without removing any metal.

Paul

Hello

I have a 10-inch Atlas with back gear that in about 30 years I have only used to see how it works.

With modem tipped and insert tooling the absolute need for a very slow has not been one of my requirements.

It is though handy to lock the main spindle when fitting and removing the chucks.

Paul

This was my solution

I wanted to engrave glass that has an uneven surface but at the same depth over the length of the text. After a few failures I came up with this solution A sprung loaded collet chuck to take the collets and tools from my dremel

The thread on the front of the dremel is 9/32 x 40 a standard M.E thread I was able to buy a die from RDG tools. The next experimentation was the force of the spring I am now using one extracted from a plastic ball point pen. The tool bit is a diamond impregnated ball 1.5 mm Dia in a 3mm shaft.

My understanding is that a spring loaded tool is used when the surface that you are engraving on is not flat or not planer so that the pressure of the spring provides a constant depth of cut over the contoured surface.

Paul Boscott

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Yours Paul>>

Edited By Paul Boscott on 20/09/2009 06:57:19

Edited By Katy Purvis on 01/06/2015 12:06:39

So I read it on line the system worked well the pages turned at my request and I was able to zoom in to the articles that I wanted to read.

On receiving the hard copy I reread it sitting much more relaxed the reading the complete magazine cover-to-cover including all the articles and adds.

PS David

I now think that there is a good case for back issues not being available until they are say 6 months old. The security of using the subscriber's number as proof of subscription is not good. I can provide details to back up this statement off line if you want an explanation

Edited By Paul Boscott on 12/09/2009 07:04:17

Edited By Paul Boscott on 12/09/2009 07:05:19

To answer my own question today I went in to town (Banbury) and purchased a selection of brass tube and a .005" brass sheet (Trinders Model Shop)

The main problem was the 0.005 hole for the jet I made it from 3 bits a cap a disk and a holder. I put the hole in the brass sheet with a tap from the small hammer on to sewing needle held in a pin chuck. Then cut the hole around with scissors fitting the 3 bits together with epoxy so that it did not leak.

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I have still to turn this prototype in to the two burners that I need but if I get it right you will be able to see them at this years Model Engineering Exhibition at Sandown.

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I am looking for information about the construction of small propane gas burners that will run on 3 psi gas pressure ideally will look like a camping gas stove but 10mm diameter I have tried scaling one without the effect I am after.

Or a nice little drawing from someone that already been there.>>

On the positive side I got a copy at Smiths Banbury there were three on the shelf

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I found it a good read

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And am planning to add a set of vice jaws as Stuart Walker in photo 6 page 16

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I have been using a pair of hardwood ones for some time

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