Member postings for Brian Oldford

This youtube video by Ralph Bacon may be helpful.

https://www.youtube.com/watch?v=dRGX_8P_98w

Welcome to the Arduino world.

With any soldering operation cleanliness is next to godliness. Make sure you use sufficient flux to prevent oxidisation of the solder.

Eye-wateringly expensive nowadays.

When patterns were predominately wood most pattern-shops used: -

Red - As cast

Yellow - To be machined

Black - Core-prints

Green - Chilled

Although some hobbyists would find automotive rattle-can finishes satisfactory a pattern that is needing to be used many times over is best coated in the proper pattern-coat.

Nowadays, with the advent of air-set moulding sand orientation of the pattern in the sand isn't so critical so denoting machined surfaces isn't carried out so often.

I wouldn't want to carry that upstairs.

Treated with respect ex-PC PSUs can make excellent bench PSUs albeit there may be a little ripple on the O/P. They often need a small base load to operate correctly which can be applied by putting a modest load resistor between +12v and Ground (0v). Some may need to be forced to turn the O/P on by earthing the green wire.

It is even possible to create a decent current O/P 24v or 36v supply by connecting two or three PSUs in series but very special steps must be taken. 

Edited By Brian Oldford on 07/03/2019 22:35:17

If you are going to use a "wedge" technique it would be better to use two to form a pair of folding wedges thus eliminating any tendency to bend anything sideways IYKWIM.

Very painless migration path from AutoCAD too. It will accept many AutoCad commands directly Pattern/Array f'instance.

We've had both type in recent times and concur, they're mostly junk.

I think they are but can't swear to it but you could save yourself some time by visiting https://www.ebay.co.uk/itm/GENUINE-MYFORD-SUPER-7-MK2-COUNTERSHAFT-PULLEY-Lathe/232778039005?hash=item3632a6fedd:g:41gAAOSw945bBCJC:rk:42f:0

LED lighting is inexpensive to run.

I'm unsure whether or not it is still available but, for similar purposes, I've used some of the Castrolease LM grease I've had for over a decade.

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Did you investigate splitting the journey over a number of tickets? So long as the train you are on stops at the station where you change from one ticket to another you haven't even got to leave your seat. With a bit of research it's amazing how much can be shaved off the cost of a long journey.

Incidentally Fort William to Mallaig isn't a preserved railway as might be inferred from your first post.

P.S. Being actively involved with a heritage railway my wife know I lost it donkey's years ago. 

Edited By Brian Oldford on 23/02/2019 20:10:10

What item is it going in to? Does it need to colour match?

A fairly common-place practice by the RC racing power boat fraternity.

Isn't tackling a Quorn almost a rite of passage?

I'll speak to the guys I use.

Actually Pete, so long as the stator windings aren't epoxy potted, on a three post machine (415v only), if you're not afraid of a bit of motor open heart surgery, you can almost always get to the star point and open it up. Carefully noting the phase relationship you can rewire it to delta and they'll invariably run beautifully. Getting the phase relationship is crucial (don't ask!).

You overlooking the even faster fuses. They have three legs. We usually call them transistors.

Whilst there are advantages to your proposed simplification it is possible that the now longer tube/flue sizes may become non-optimal.

I know of two instances where people built combustion chambered boilers then lightly inverse hydraulically tested the assembled firebox and tube nest by blanking off the grate aperture and the smokebox ends of the tubes and flues before moving on to further boiler assembly.

Your choice, of course.