Member postings for Roger Woollett

I made a "thimble" out of mild steel with an external taper to match MT2 and an internal parallel bore. I have a range of mandrels which just drop in. Works for me.

Roger Woollett

I bought one from Chonos a while back. I do not use it often but it is a nice solid device and reasonably well made.

It is nearly 4 inches high so does take up a bit of Z axis room. Make sure your mill is big enough.

Roger Woollett

Assuming that the holes are in the flat end plates of the boiler iether a step drill or a cone drill will work fine. The sort of drill Ian S C describes are sold as bullet drills. They also work fine.

Roger Woollett

I suggest you use 15mm plumbers pipe - this will give you a bit more surface area for heat transfer. I have used that on Polly boilers and it works fine.

I think I am right in saying metric pipe is defined by its o/d and imperial by its i/d so 15mm is close to half inch. In my opinion 12mm pipe would be a bit small.

Roger Woollett

Has anyone looked at theFelix 3. Also dutch.

> The Arduino "language" is a stripped down version of 'C'

I disagree. It is actually a pretty complete C/C++ based on the gcc avr compiler. The Arduino IDE is primitive but with a bit of effort you can use Eclipse IDE which is very good.

Roger Woollett

Edited By Roger Woollett on 04/10/2013 17:08:36

You may find Garryflex blocks useful. They are rubber blocks impregnated with abrasive. I suggest the medium (grey) or fine (brown). You can cut these with a knife to get a suitable shape for nooks and crannies.

Roger Woollett

Yes fine now. Thank you John.

Roger

When I try to access the Homeworkshop website I get "Forbidden - You don't have permission to access / on this server". Is anyone else getting this?

Roger Woollett

I can also recommend the Tubal Cain books. At SMEE we use his Polly design from book 1 as the basis for our Polly course which has been very successful.

It introduces most of the metalwork skills a model engineer uses - using hand tools, soft and silver soldering, turning, thread cutting etc. It does not use castings so mistakes are cheap.

We diverge from the book to some extent - we prefer to use seamless copper tube for the boiler and put three bushes in the boiler (steam outlet, safety valve and filler).

You may save some money by using 42mm plumbers tube for the boiler instead of 1 3/4 inch but will need to adjust the engine stand design slightly.

Roger Woollett

I think you might find it will not grip the workpiece very well. Delrin is slippery stuff.

Roger Woollett

Brilliant! I magnetised my caliper by foolishly measuring a magnet. I have been meaning to fix it for ages. As it happens I had an old central heating pump which worked just as Ian describes.

Roger Woollett

John - you say "all you have to do is dress them well!"

Could you give is your method for doing this. When I was shown how to use a burnisher (a long time ago) I do not remember any mention of dressing.

Roger

Many thanks David

Perhaps someone should have words with the subscription people. I should not have had to bother you with this.

Roger Woollett

It would appear that my issue 4436 got lost in the post.

Using the email addresses on the contacts page I have emailed

[email protected] (twice) and [email protected] (once)

I have not had a reply to any of these messages.

What do I do next?

Roger Woollett

Does the sticker say Easy Flo2? I may be wrong but I thought there was an EasyFlo without a number that may not have been the cadmium bearing stuff everybody likes.

Roger Woollett

I have used Simply Bearings in the past and found them very reasonable. They list 9,5 i/d, 12.5 o/d nitrile rings as £2.29 + VAT for 2off. Postage is £1.50. They have a big range and a choice of materials.

**LINK**

Roger Woollett

Another thing to check is the adjustment of the gib strip for the milling head. If this is slack the head may well nod forward. Also make shure that the head is locked when you make your measurements.

Roger Woollett

The DIY sheds sell butane gas canisters for use with plumbers torches. They have a screw fitting.

Bruce Engineering sell an adapter (£12.90) which I use to refil my small torch.

Roger Woollett

There is one albeit a bit small for most people. The Cowells lathe has a dog clutch which is tripped out by a lever attached to the saddle.