Search found 227 matches

by andrewnummelin
Tue Sep 29, 2020 7:43 am
Forum: Layouts
Topic: De Graafstroom - OntraXS!
Replies: 23
Views: 517

Re: De Graafstroom - OntraXS!

Vincent,

Thanks for the extra background - adds even more life to the layout.
by andrewnummelin
Sun Sep 27, 2020 6:55 pm
Forum: Virtual Scaleforum
Topic: VIRTUAL SCALEFORUM & SCALEFOUR NORTH
Replies: 132
Views: 7002

Re: VIRTUAL SCALEFORUM & SCALEFOUR NORTH

A huge vote of thanks to all the people involved with creating a very special event. Also I'm sure that many people used presentation techniques that they would not have considered doing in the past - hats off to those who dared do something new. I've had a couple of very enjoyable days and, like at...
by andrewnummelin
Sat Sep 26, 2020 4:05 pm
Forum: Layouts
Topic: De Graafstroom - OntraXS!
Replies: 23
Views: 517

Re: De Graafstroom - OntraXS!

Uitstekend! Perhaps an additional award should go on this page https://www.degraafstroom.com/nl/nieuws . I'm curious - what's the origin of the name? Google Translate's "digging stream" seems very unlikely to me! Just shown the video to my wife who commented: "Netjes, wat leuk. But wh...
by andrewnummelin
Sat Sep 26, 2020 3:12 pm
Forum: Demonstrations and Talks
Topic: Resistance soldering
Replies: 25
Views: 547

Re: Resistance soldering

I've been using an Exactoscale RSU for many years but found your excellent presentation very useful in showing techniques that I have not employed. I'm sure I'm going to do better in future. I do have, and sometimes use, the Exactoscale base but I think David's approach is somewhat better. I find it...
by andrewnummelin
Tue Sep 22, 2020 1:17 pm
Forum: Lathe Work
Topic: Toyo ML1: any use?
Replies: 6
Views: 372

Re: Toyo ML1: any use?

Guy,
I’ve no personal experience with this but found the following link to be rather interesting:
http://www.lathes.co.uk/toyo/page3.html
The odd Morse taper suggests that finding accessories may prove to be a challenge.
At the current bid price it might be worth a gamble.
by andrewnummelin
Sun Sep 20, 2020 7:08 am
Forum: andrewnummelin
Topic: Little & Large - The Socially-Distanced Challenge
Replies: 23
Views: 4068

Re: Little & Large - The Socially-Distanced Challenge

Guy Rixon wrote:

This video, around 8:00, shows making a spring from scratch.

Guy,

That’s useful - very many thanks.
by andrewnummelin
Fri Sep 18, 2020 5:57 pm
Forum: andrewnummelin
Topic: Little & Large - The Socially-Distanced Challenge
Replies: 23
Views: 4068

Little & Large 8 - The Socially-Distanced Challenge

Progress and a spring problem. To start to assemble the underframe I made a jig from a spare bit of steel, drilling holes to correspond to the positions of the bogie centres and the centres of the suspension rods. This was then used to hold the suspension skirts in the correct locations while solde...
by andrewnummelin
Thu Sep 10, 2020 1:28 pm
Forum: Trains: Model and Prototype
Topic: New book from the RCHS
Replies: 0
Views: 613

New book from the RCHS

My copy of this arrived this morning and although not directly relevant to our common modelling activities I thought it would be of particular interest to at least one well known member... and anyone looking for applications for spur gears. Michael Lewis has written what I expect to be an excellent ...
by andrewnummelin
Mon Sep 07, 2020 6:29 pm
Forum: andrewnummelin
Topic: Little & Large - The Socially-Distanced Challenge
Replies: 23
Views: 4068

Little & Large 7 - The Socially-Distanced Challenge

Time for an update, especially as we approach the very different end of the month special event. Little The drawing for the wheel spokes went off to Shapeways and passed the initial checks, however it turned out that the spokes were, in places, thinner that Shapeways thought would be acceptable for ...
by andrewnummelin
Sun Aug 16, 2020 6:20 pm
Forum: andrewnummelin
Topic: Little & Large - The Socially-Distanced Challenge
Replies: 23
Views: 4068

Re: Little & Large - The Socially-Distanced Challenge

Following on from Guy's suggestion I've now managed to draw the spokes and centres for the coal tub wagon. The initial submission to Shapeways indicated that I have two options. Capture.JPG 1. Use polyamide (PA11) and loctite to axels and tyres. 2. Remove the centre boss and use brass, then solder t...
by andrewnummelin
Sun Aug 16, 2020 12:39 pm
Forum: Couplings
Topic: Which 3-link coupling? Please show your favourites
Replies: 21
Views: 1675

Re: Which 3-link coupling? Please show your favourites

Over the decades I've used hooks from many sources, including home made, and have come to prefer the Exactoscale stamped ones because of their superior appearance. However, as others have mentioned, etched hooks can have advantages. I thought some observations I've made may help your decisions: 1. P...
by andrewnummelin
Fri Jun 26, 2020 3:02 pm
Forum: andrewnummelin
Topic: Little & Large - The Socially-Distanced Challenge
Replies: 23
Views: 4068

Re: Little & Large - The Socially-Distanced Challenge

Guy, Many thanks for the very interesting and useful information. PA12 does indeed appear to be a good candidate material for this sort of application but it may be touch and go for minimum thickness - I’ll do a drawing and submit it to see how it is rated. I’ve been thinking through how to make the...
by andrewnummelin
Thu Jun 25, 2020 10:36 am
Forum: andrewnummelin
Topic: Little & Large - The Socially-Distanced Challenge
Replies: 23
Views: 4068

Little & Large 6 - The Socially-Distanced Challenge

Only just realised that part 5 had not been posted when it should have been and this one should have appeared yesterday. Little & Large Today is a bad day! I'm missing some bolts and will have to go out shopping, now that it's allowed. It's not just the missing bolts as some new tools have arri...
by andrewnummelin
Thu Jun 25, 2020 10:29 am
Forum: andrewnummelin
Topic: Little & Large - The Socially-Distanced Challenge
Replies: 23
Views: 4068

Little & Large 5 - The Socially-Distanced Challenge

This should have been posted on 11 th June but for some reason, probably my carelessness, it did not appear. Little The first coal box has been made - quite fiddly. The basic box was made from 2thou brass shim, being the nearest in thickness to the scale size of the prototype's 3/16". I wonder...
by andrewnummelin
Thu Jun 25, 2020 7:47 am
Forum: Track and Turnouts
Topic: A4 points out of 6 chain curves
Replies: 9
Views: 797

Re: A4 points out of 6 chain curves

A good initiative, well done.

Based on a problem I recently had with a printer not doing exactly what it should have done, may I suggest that, if possible, you add a scale rule in both x and y directions so the accuracy of the final print can be checked.
by andrewnummelin
Sun Jun 14, 2020 11:38 am
Forum: Other Workshop Practice
Topic: A machining question.
Replies: 9
Views: 1242

Re: A machining question.

Gents, Thanks for the advice and questions that have made me think... Accuracy needed? Visually irrelevant, good enough to work - I've no idea what that means numerically! Number needed? Three (so six suspension links), so no need to think of "mass production" unless the carpet god gets ve...
by andrewnummelin
Fri Jun 12, 2020 8:25 pm
Forum: Other Workshop Practice
Topic: A machining question.
Replies: 9
Views: 1242

A machining question.

I was wondering if anyone could suggest a good method of making the part shown in "C" (with fittings) and "D" (plain) below: the side elevation is in "B", "C" and "D" are views from underneath. Capture.JPG My initial thoughts are milling (but I'm not...
by andrewnummelin
Wed Jun 03, 2020 12:21 pm
Forum: andrewnummelin
Topic: Little & Large - The Socially-Distanced Challenge
Replies: 23
Views: 4068

Little & Large 4 - The Socially-Distanced Challenge

Progress! And a request for help. Things have moved slowly as, to relieve the tedium of fiddly bits, I've also built a Slater's van kit that has been in the cupboard for over 10 years: and there was the garden and good weather! Little So the CAD drawing was resized differently in the x & y direc...
by andrewnummelin
Tue May 26, 2020 10:17 am
Forum: Wagons
Topic: Exactoscale wagon chassis kits
Replies: 13
Views: 1869

Re: Exactoscale wagon chassis kits

By chance I've been working with similar problems. As an interlude from the lockdown challenge I decided to do something simple and build a Slater's MR van kit and fit it with Exactoscale suspension bits that I've had in stock for many years. I used the conversion bits (solebar and W irons as single...
by andrewnummelin
Tue May 12, 2020 10:03 am
Forum: Track and Turnouts
Topic: Single and Double Slip Operation
Replies: 8
Views: 1650

Re: Single and Double Slip Operation

If you want to have a nice plan drawn with software then Templot, but for this purpose pencil and paper is much quicker if you have a scanner. Without a scanner a sketch using 'Paint' will also do. Suggest using coloured pencils - at least three, one for each "+ve and -ve" and one for the...
by andrewnummelin
Mon May 11, 2020 9:54 am
Forum: andrewnummelin
Topic: Little & Large - The Socially-Distanced Challenge
Replies: 23
Views: 4068

Re: Little & Large - The Socially-Distanced Challenge

... I made up a true faceplate from a lump of brass to secure the tyre to with double sided tape, having removed the moulded centre, after all I was only taking gentle cuts, and I wanted to be able to remove the tyre without distortion. It took a fair time even taking a fraction off at a time, and ...
by andrewnummelin
Sun May 10, 2020 12:12 pm
Forum: andrewnummelin
Topic: Little & Large - The Socially-Distanced Challenge
Replies: 23
Views: 4068

Little & Large 3 - The Socially-Distanced Challenge

Two steps forward and seven steps back Large The profiles and other bits ordered from Eileen's arrived quickly but nothing has been done with them yet fortunately! Little A start was made with the wheel sets: to check that everything else would work, I decided to use standard wheels first before em...
by andrewnummelin
Fri May 01, 2020 7:11 am
Forum: On My Workbench
Topic: Socially Distanced Challenge – CR Class 488 Build
Replies: 57
Views: 5699

Re: Socially Distanced Challenge – CR Class 488 Build

Lovely.
I’m looking forward to following this as I’ve a wish to model an 0-4-4WT (with open cab) and have always thought that hiding the motor and gearbox could be a challenge, as will getting the balance right to keep it on the track and able to pull a decent load.
by andrewnummelin
Sun Apr 26, 2020 7:03 pm
Forum: andrewnummelin
Topic: Little & Large - The Socially-Distanced Challenge
Replies: 23
Views: 4068

Little & Large 2 - The Socially-Distanced Challenge

Not much progress to report as the weather has meant the garden took priority! Still some things have been done. little and large 002.jpg Little Solebars and one headstock have been fitted to the floor. The second headstock can probably only be fitted once the underframe is running OK as it will blo...

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