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Member postings for steamdave

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

Thread: Polishing Delrin
22/12/2020 12:33:32

The part that is not a regular shaped item so it had to be filed to rough shape and then down to the wet 'n' dry.

Following on from steviegtr's suggestion, I used some black trim restorer. That didn't seem to make much difference, so then on to furniture polish and that seemed to produce a satisfactory result.

Thanks to all the other ideas.

Dave
The Emerald Isle

Edited By steamdave on 22/12/2020 12:33:47

15/12/2020 21:21:54

Thanks, Steve.

I'll try furniture polish first, then if that doesn't work, I've got some car trim restorer that works well on black plastic.

I'll report back when I've had a go.

Dave
The Emerald Isle

15/12/2020 20:49:57

What is the best way to get a shiny finish on black Delrin?

I've got a piece of Delrin that I want to get a shiny finish on, the sort of finish that comes as supplied new. I've used successively finer grades of abrasive down to 2000 and then used Solvo Autosol by hand to try and get a shine. No success, it just remains a dull black.

I don't want to use a buff in case I melt the stuff (which I have done before).

Dave
The Emerald Isle

Thread: Electric vehicles
22/11/2020 11:13:55

Electric vehicles are all well and good for urban areas, but for rural areas like the west of Ireland are totally impractical. At the present time there are few charging points and those that there are don't always work or are occupied when required by Biddy doing her shopping.

Public transport is non-existent in rural Ireland. I would have to walk 2-1/2 miles to the nearest bus stop. Great in the pouring rain and even better when going home again with the shopping!

It will take a sea-change in attitudes to get Paddy the farmer to change his Toyota Landcruiser for an electric alternative (Is there one?), especially as a few years ago the Irish government persuaded people to go for diesel cars. Diesel fuel is approximately 10c/litre cheaper than petrol. (Locally diesel = 1.15 EU litre).

There are a lot of old cars on the roads here and with combustion engines, they somehow keep on going. What happens to the batteries in electric vehicles when they are beyond their useful life? The cost of a replacement battery presently is uneconomic when put into an older vehicle, and to my knowledge they cannot be recycled.

As for the infrastructure, who is going to pay for the many, many thousands of tonnes of copper and other metals required to install the charging networks? You can bet your life, the cost will be passed on to the consumer in higher electricity charges and taxes. Never mind the pollution, invest in copper mining companies and make your fortune!

Dave
The Emerald Isle

Thread: The Engineers Emporium Henry (Heinric) Stirling Engine
15/11/2020 22:25:29

The Engineer's Emporium Heinrici engine is a Wiggers design. Wiggers retired some 5 years ago and the design 'died' then. As did the Lameter hot air engine that also appears in the EE catalogue.

I tried to get a set of those Heinrici castings and was told by Adrian Grimett of EE that he had one set of the original Wiggers' Heinrici castings that he was going to make up 'one day'. How/why those designs are in the EE catalogue I know not except perhaps that a deal was hoping to be done, but never came to pass.

For anyone interested, the Hubbard marine engine castings (ex- Heinz Kornmuller Classic Motors) are being sold by EE.

Dave
The Emerald Isle

Thread: How can a steel thermos drinks flask fail?
09/11/2020 12:38:59

My Thermos 'Ultimate Insulation' flask keeps hot drinks piping hot for at least 10 hours. Had it for quite a number of years and although it was more expensive than other flasks, I consider it money well spent.

Dave
The Emerald Isle

Thread: what is it
07/11/2020 11:34:02

The compressor looks like a Stuart design that is based on their Sirius engine, which is 1" bore and stroke. That should give you a starting point!

Dave
The Emerald Isle

Thread: New Member from Ireland
24/09/2020 17:04:20
Posted by john O'Sullivan 4 on 23/09/2020 15:06:13:
Posted by Del Greco on 23/09/2020 10:04:29:

Hey John,

I'm also from Ireland. Based in Dublin. How about yourself?

Welcome, and hello.

Regards,

Del

I am based in limerick so my selection of equipment is even smaller than the midlands or Dublin.

worst part is all the lovely equipment in UK for lot cheaper then in here

Trust you are a Munster supporter, then!

Dave
The Emerald Isle

22/09/2020 15:11:28

Welcome to the forum,John.

Just curious,what part of Ireland? Anywhere near West Cork?

Dave
The Emerald Isle

Thread: Jobs we had as kids
08/09/2020 11:47:30

Does anyone remember Bob-a-Job week for the wolf cubs/boy scouts?

Some of the jobs were easy and I got paid more than the Bob. Others were darned hard and/or dirty work and I got paid just the Bob. One I remember was having to clean an old brass/copper gas geyser that provided hot water for the bath. The housewife kept checking up on me and pointing out all the areas I had missed or not done to her satisfaction. About an hour's work for the Bob. That was as a lad of maybe 10 years old.

Dave
The Emerald Isle

Thread: Is there any tips for sawing aluminium
04/09/2020 15:53:20

Now, as for technique with your new blade:

With the bar in your vice, start sawing 'uphill' (from bottom front to top mid) then saw 'downhill' (from top mid to rear bottom). This will give you an inverted V shaped slot. Cut off the apex then resume as before. The logic behind this is that your cuts are shorter than just cutting straight across the bar.

Thanks to Tubal Caine (Tom Walshaw) for this method.

Now I've got a power hacksaw, my muscles have become all flabby without the use of Armstrong's Patent.

Dave
The Emerald Isle

Thread: UK availability of 1/8" Dia shank End mill/Slot drills
31/08/2020 15:07:06

The ones linked to are 1/4" shank.

For 1/8" shank, try eBay 282916540783. These are ball end, but he does do radiused end versions. Can't find any square end ones, though.

In times past, I've had some of these and they were good value.

Dave
The Emerald Isle

Thread: Silicone oven liner material
30/08/2020 16:17:33

I asked the question about sourcing teflon sheet for gaskets and one answer was to use oven liner.

https://www.model-engineer.co.uk/forums/postings.asp?th=167211

Haven't tried it because I still have enough teflon sheet for my present project. I don't know the thickness, but I would have thought that oven liner would be a bit too thick for small engine gaskets. My teflon sheet is 0.006 thou thick (as close as I can measure it).

Dave

The Emerald Isle

Edited By steamdave on 30/08/2020 16:17:51

Thread: De ham lathe
30/08/2020 10:19:59

First port of call would be lathes.co.uk

http://www.lathes.co.uk/denham/ Will give you a quick read on your lathe. It states that literature is available.

Dave
The Emerald Isle

Thread: Hydraulic ram machining
22/08/2020 22:38:38

Hydraulic rams - how easy/safe is it to remove the rod from the cylinder? There is not much force on the ram and no fluid leak.
Cylinders in question are about 1" OD and about 5" long, the rods are about 3/8" diameter. (All guesstimates at this time of night).

Dave
The Emerald Isle

Thread: Myford ML7 questions
20/08/2020 16:21:33

Will

You would do well to subscribe to the Myford group on .io There you will find a wealth of knowledge.

Not saying that there is a dearth of knowledge here, mind you!

https://groups.io/g/myfordlathes

Dave
The Emerald Isle

Thread: Spark plug washers and Teflon shim
14/08/2020 17:16:44

They will, but the question is still the same. Thankfully it has now been answered.

Dave
The Emerald Isle

14/08/2020 14:45:11

Thanks, JB

I knew you would have the info!

Dave
The Emerald Isle

13/08/2020 22:51:42

Any ideas where I can get spare spark plug washers for 1/4" x 32 plugs?

I've had a look at Hemingway and S/S but they don't appear to have them. The copper washers on eBay are too wide (difference between inner and outer diameters)

While I'm at it, who sells Teflon (PTFE) sheet in 5 or 10 thou thick sheets? No luck on eBay or the usual ME suppliers. If all else fails,I can get copper shim 0.2mm thick. I suppose that would be OK instead?

Dave
The Emerald Isle

Thread: Watchmaker's lathe
13/08/2020 14:26:07

Quite a number of years ago I came by a watchmaker's lathe. At the time, I knew nothing about it, but after giving it another looking at recently, I have discovered it is a Lorch.

img_2858.jpg

img_2859.jpg

Looking at the lathes.co.uk sight, it is actually a Lorch Schmidt 'Geneva' pattern 6mm lathe.

Unfortunately, what is pictured is all that I have. What the small brass 'pulley' is I have no idea, except that it is not really a pulley because it is fixed and at an angle to the lathe axis.

Originally I intended to try and make a few bits and pieces for it, but that is another job that will become a squaretuit as opposed to a roundtuit.

Just posting this out of interest to the watchmaking fraternity here.

Dave
The Emerald Isle

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