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Member postings for Peter Howell 1

Here is a list of all the postings Peter Howell 1 has made in our forums. Click on a thread name to jump to the thread.

Thread: ER collet chuck for Super 7
15/08/2023 18:57:46

Diogenesll. Thanks - I didn't see that on RDG's website. Found it now. Just what I want.smiley

15/08/2023 14:23:30

Thanks Guys.

I've bought from ArcEurotrade before. I like the idea of the backplate type appreciate comments about direct screw on ones.

15/08/2023 12:24:47

I'm thinking about getting a set of ER collets for my Super 7. There are several 2 morse taper adaptors available, but does anyone know if I can get one to screw directly onto the Myford spindle?

Thread: Polly Engineering
23/01/2023 14:26:36

I am surprised that there has been nothing in the magazine about the retirement of Andy Clarke and the sale of Polly Engineering. There seems to be some uncertainty about the future of their kits.

Thread: Metric fasteners
26/11/2022 17:30:34
Posted by JasonB on 26/11/2022 17:11:33:

I prefer proper studs with threads just at the ends smiley

Yes. But these are for through bolts with nuts on the other end holding brackets onto the frame. Would look odd having studding with a nut both sides.

Edited By Peter Howell 1 on 26/11/2022 17:32:36

26/11/2022 12:13:06
Posted by DiogenesII on 26/11/2022 10:47:48:

I've bought more than once from this German company; example of their stuff;

GHW - Bare Steel Hex Head Screws for Modelling

There's a little 'Flag' icon in the top left corner to change the language. Nice products, with useful descriptions.

Not come across them. There's a lot of useful looking stuff on their website and you can use PayPal. I'll give them a go.

26/11/2022 10:04:23

In 1982 the British Standards Institute (BSI) published PD6507. 'Guidance on metric screw threads and fasteners for use by model engineers'. I acquired a copy (the company I worked for had a BSI account). It specifies a range of metric fasteners etc scaled to represent full size e.g. Whitworth. So bolt head hexagons are not as normal metric.

It appears to have never been adopted.

I intend to use metric fasteners on my latest model but I'm having problems in finding small (2.5mm) hex head bolts. So far all I've found are in stainless. Plenty with socket heads but this is not in keeping with the model.

What do others, who've adopted metric, do ?

Thread: 26 tpi thread
01/04/2022 18:07:47

Thanks. I thought it probably would be brass but I thought I'd check.

01/04/2022 16:44:20

I need to make an adaptor to pressure test my loco boiler. The safety valve has a 26tpi thread.

Would this be Brass or Cycle ? Both have 26 tpi, brass is 55 deg. cycle 60

Thread: Sharpening Lathe Tools
20/01/2022 15:03:12

Yes to all these replies, But what I was really after was at what point would you stop regrinding to sharpen and start afresh.

I've got several HSS tools that cut well but have been sharpened so many times that the cutting edge is getting quite small, Or if the side face has been reground have quite a shoulder limiting their use when facing.

And when starting over how do you remove the old - they are going to take a considerable amount of grinding back. Cut the end off with an angle grinder?

20/01/2022 13:20:37

There is plenty of advice on grinding lathe tools but what about resharpening them.

Do you grind the front face, the side face or the top face?

Then where ever you grind you are going to make the cutting area smaller. At what point do you decide enough is enough and start over again?

I'd be interested in hearing what others do.

Peter

Thread: Hornby on TV
13/10/2021 13:48:44

I agree. Rather disappointing. Too general, not enough detail.

Yesterday TV does have some interesting programs, but trying to watch them on catch-up (UKTV Play) is really bad for adverts, often get 8 in a row + 3 or 4 on start up.

09/10/2021 19:41:46

Some months ago Smokerings in Model Eng, mentioned Yesterday TV were making a series behind the scenes at Hornby.

I've just seen a trailer on Yesterday TV for it saying it starts this Monday.

Thread: Identifying brass?
15/03/2021 11:36:23

Thanks for the replys. Yes its bronze.

So is it going to be any use to me? It's about 1" dia.

14/03/2021 15:16:18

I've been give an old boat propeller shaft. It looks to be a very useable piece of bar.

How can I identify if it is brass or bronze. A quick 'Google' shows boat prop shafts have been made from both. (Now nearly all are stainless). Colour wise it looks like brass.

Thread: Plugging incorrect holes
12/03/2021 14:23:43

Thanks for all the suggestions.

I've been looking at the job this morning. Most things look better in the light of day.

The simplest solution , in this case, is just to remake the bracket that it fixes to to suit the incorrect holes. It's only made from a piece of angle. Hopefully no one will notice they are not on the centre line.

12/03/2021 09:08:31

I managed to drill and tap 3 x M3 holes in the wrong place in a cast iron casting. (measured from wrong face !)

I need to plug them and re-drill however the correct holes will slightly overlap the incorrect ones.

My first thought is fix a sawn off screws in the holes with Loctite Retainer, but will they stay put with the new holes overlapping ?

Any other ideas.

Thread: Fosse way Exhibition Centre
18/02/2021 20:51:23

I think it is or was TEE

Thread: Multi-part assembly drawing
18/02/2021 09:06:43
Posted by Nigel Graham 2 on 17/02/2021 14:22:54:

(I use TurboCAD, and it doesn't offer magnifying - it might fit a 5" g. loco cylinder and its dimensions legibly at 1 : 2 on A4, but I don't think it would allow showing the drain-cocks at a readable 10 : 1 on the next sheet.)

'

Nigel

Surely in TurboCAD when you insert a view into your 'Paper' Space you can change the scale. So all you need do is create a separate view of the detail, insert it into Paper than increase its scale as much as you need.

I've just checked this. I am running an old 2016 version Turbo that I've never transferred to my new Laptop so I had to fire up the old computer and checked last night.

17/02/2021 15:50:36

The discussion my query provoked has be most interesting.

Personally I get a great deal of satisfaction from producing a good drawing, and you can do it sitting down in the warm !

I have enjoyed Technical Drawing (as it was called) at secondary school. I still have a book given to me as a school prize for that subject. Then in the early 1980's I introduced a very early CAD system into the small engineering company I was working for. A program called RoboCAD running on an early IBM PC. I was still involved in producing drawings for them up until I retired in 2000. But only in 2D. After that I bought my own copy of TurboCAD and continued producing drawings for my own use - but to a reasonable standard.

Now I thought it about time to stretch the grey matter and try to get to grips with 3D. FreeCAD is free so nothing to loose if I give up. I have been told I should have signed up as a hobbyist for Fusion360. But I'd already started producing some stuff with FreeCAD.

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