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Member postings for mick H

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

Thread: Kerr's Minature railway closing
04/10/2020 08:43:57

Dave, I have sent you a pm

MickH

Thread: waterproof sealing strip
02/10/2020 18:45:05

Thank you gents for the usual abundance of ideas. I am making a submarine ....outline only, not a diving model....which will be a replica of the Jules Verne Nautilus, 1954 film version. The model is 32" long. The stern and bows are built up from turned oak and the centre section of the hull is a 10" length of 110mm drainage pipe. This centre section has a section 8" x 2" cut out of the top into which the motor, battery and servos etc can be accessed. This is the hatch that I hope to close with a piece of curved 0.5mm brass sheet. I now feel that it would have been easier to give this information at the outset so apologies for the omission.

Mick

02/10/2020 15:02:50

Assistance required please to locate a sealing strip. The strip is required to seal a thin metal plate which goes over an aperture in the top of a boat's hull. The metal plate is removable for access to a battery and other gubbins inside the hull. The metal plate will not be below the waterline but very close to it and will inevitably get wet when the boat is in motion. I would like the sealing strip to have as low a profile as possible. The metal plate will be screwed down onto the sealing strip to give a bit of squeeze. Does such a sealing strip exist ?

Mick

Thread: UNF reducing bush
20/06/2020 13:19:10

Can anyone assist in locating a 7/8 (male) x 3/4 " (female) UNF reducing bush. I am blowed if I can find one on Google.

Mick

Thread: Gear software
19/06/2020 13:29:33

Thank you gents. Just what he needs.

Mick

19/06/2020 08:03:38

I recently asked for information on types of wood suitable for making gears and had a very generous and helpful response. May I now take this a step further and ask whether anyone knows of software into which one can input gear data ie pcd, number of teeth and module and obtain a two dimensional printout of the gear. This is for my son who needs to make wooden gears for a project. His hope is to glue a paper image of the gear onto suitable wood and cut around it.

Mick

Thread: Wooden Gears
14/06/2020 13:41:12

My son is building a wooden traction engine. I have already warned him of the difficulties of raising steam in a pine boiler wink but he is pursuing the project and as he is a glutton for punishment wishes to make a full gear chain in wood. What sort of wood would the forum advise that he uses?

Mick

Thread: Tufnol - cylinder block?
06/06/2020 08:20:20

I originally asked this question because I have a big lump of Tufnol ( 9x6x2" which has been sitting under the bench for a few years now and apart from a small offcut to make a repair has been unused. On another note, I recently built a two cylinder marine engine with a solid brass cylinder block which has heat loss issues. Putting these two thoughts together I wondered whether a suitably lined Tufnol block might be feasible. As far as stud fixings go, I can forsee no problem with appropriate inserts. A Tufnol retailer has identified my block as Whale grade which has a working temperature up to 130C which would only give me a working pressure in steam of about 25psi so I think the idea has fallen at the first hurdle as far as steam is concerned. So what can I do with my big chunk?

Mick

Thread: Pillar drill running in reverse
24/05/2020 21:03:49

Thanks gents. I will try and get some photos to post.

Mick

24/05/2020 18:31:27

I have just spoken to my son in Canada. He bought a S/H pillar drill (make SA LR 102902-6) about a year ago and has only just started using it but it runs anticlockwise. It seems to be a straightforward pillar drill with an induction motor and no reversing facility. What could be wrong with it please ?

Mick

Thread: Tufnol - cylinder block?
30/04/2020 11:32:13

Thinking of steam Roy. About 60psi.

Mick

30/04/2020 10:00:14

I have got a substantial block of tufnol lurking under the workshop bench and just wondering whether it could be used to make cylinder blocks, suitably lined.

Mick

Thread: countersinking
29/04/2020 08:33:48

Thanks for the comments and advice gents.

For what it is worth, my method is similar to Andrew's and uses my small mill drill which has a quill digital readout. Having achieved a decent countersink by trial and error I then note the dro reading for subsequent countersinks. Unfortunately, this rarely proves to be consistent enough and to get a really good result have to resort to drilling a smidgen shallow and finishing with a hand held countersink. Perhaps this is because of variations in the fixings that Ian describes. If the required countersinks are in separate workpieces, however carefully I try to set it up, the above method does not work. To be fair, it is not very often that I need extreme accuracy but I have to do countersinks in six separate items that do require a very decent finish. Wish me luck.

Mick

28/04/2020 11:12:01

This is probably another one of those questions to which, when I get the answer will leave me feeling stupid, but here goes anyway.

When countersinking, for countersunk screws, how do you gauge or calculate the depth of countersink. Until now I have adopted the trial and error approach but on occasion have come unstuck when I go too deep. How can I obtain consistency ?

Mick

Thread: ANZACS - We will remember them!!
25/04/2020 07:14:26

My Dad fought with the Anzacs in the North African campaign and subsequently up through Italy to Germany. He had a very high regard for them and reckoned that they were the finest of fighting troops.

Mick

Thread: Australian Crayfish?
07/04/2020 16:14:41

Last time in Western Australia on the way to Margaret River we stopped at a little crayfish farm where my wife partook of a significant crayfish lunch. Unfortunately I have a reaction to shellfish but she really rated them. I believe they called them "marrans" or possibly "marrons". Very reasonable price as I recall.

Mick

Thread: Macgregor digimac transmitter receiver crystals 3
02/04/2020 09:08:27

Another MacGregor Digimac VI request. I think I have fried my receiver through a crass and idiotic action. Anyone know where I can get another?

Alternatively, maybe, I note that there are plenty of 27mHz receivers on eBay. Are receivers generally compatible with any make transmitter using the same wavelength, assuming the crystals match ?

As usual, any assistance gratefully received.

Mick

Thread: Sealing circuit boards with silicone
02/03/2020 13:51:35

Thanks for the advice gents. I am pleased that I asked.

Mick

02/03/2020 09:58:43

I have been advised that I can effectively seal and waterproof electronic circuit boards with silicone. The specific application is for a small (1.25" x 1.25" board for a boiler water level sensor for a model steam boat. My query is that tube silicone usually has a strong acetic acid type smell and I wonder whether it will corrode the connection wires etc ? Otherwise it seems to be a good idea. As an alternative there is always shrink wrap but I think the silicone could provide a neater job.

Mick

Thread: Polly Steam Plant
02/03/2020 07:56:55

It will dissolve when you pickle and rinse it.

Mick

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