June 2018

Bluewater Bulletin

Bluewater Model Engineering Society Sarnia, Ontario

Vol. 33 No.8 May 2018 Editor John Lovegrove

Our next meeting and last of the season will be on

June 11th, 2018 @ 7:30 pm

Northern Collegiate Room 128, Indian Road, Sarnia.

The May Meeting

We had a couple of visitors/prospective new members at the meeting: John Poaps who is interested in all sorts of engineering and Don Hayes who is looking for a hobby when he retires. Don had just bought an old Emco Compact 5 CNC lathe - more later.

Bruce Mannerow started by discussing club finances: We are going the opposite way to our province in that we not only have a surplus but a growing one. The subscription of $20 per annum was set a long time ago when we had club insurance to cover us for exhibiting at different shows and in the dim and distant past for giving rides on the club track. This was always the most significant on-going expense but we stopped taking insurance a few years ago when the previous arrangement we had with other clubs fell apart, getting insurance on our own became very expensive and the need for it essentially went away. (Basically, we stopped exhibiting where insurance is required.)

Since then we have been accumulating a surplus and there has been no pressing need to spend any money buying equipment etc. Bruce therefore proposed that we reduce the subscription to $10 per year and review the situation annually so that we still maintain a reasonable balance in the bank. This proposal was approved by a vote of members present.

NAMES was discussed: Several of us went along to both exhibit some models and look at the show. Because the April newsletter came out after the show I did put in some comments and a few photographs. However, it is worth mentioning again that we all felt that it was a good show and it was nice to meet up with a few people in the model engineering world who we have come to know but only really get to see at the exhibitions. The only disappointing part was the lack of seminars because of some issues within the organizing committee. Some YouTube videos of the show have been posted on the web:

https://www.youtube.com/watch?v=Fjs6uE_Q0e0

https://www.youtube.com/watch?v=2mmGX7sMASM

https://www.youtube.com/watch?v=Tyf91iH8r3I

Last time Bruce talked about needing to make some Bellville type washers. This time he brought along the

jig he has made to produce the dished shape required in the spring washers.

He also talked about O’keef’s vise casting sets. Apparently, this person started producing these and the demand became so great that he had to stop taking orders – a very nice situation to be in for someone making and selling something. They must have taken down any references on the web because it is difficult to find much information. I personally have a problem with making one’s own "tooling." This is probably because having spent a long time working for an engineering company, the rule is that you never make something yourself, on a one-off basis, if there is anyone out there making essentially the same thing by the thousand, that will do the job as well if not better.

Murray Bennell was discussed. He had been a club member for some time but died of cancer in February 2016. He bequeathed his body to medical science, with the provision that it be cremated afterwards. His daughter Sara has now received the ashes and wishes to dispose of them in a manner that is fitting for an ex-model engineer and model train enthusiast – possibly at the Komoka track.

In the workshop tips category, Bruce talked about a system for measuring the diameter of a parallel bore using two matching wedges and an external measuring device. Most people have outside micrometers to cover a range of diameters but internal micrometers or bore gauges are less common.

knows the person who owns the collection and will look into the possibility of a visit.

Shows this summer were discussed and Bruce promised to put together a list for inclusion in the newsletter (next time.)

Telescoping Internal Gauges are another option.

There was some discussion about another field trip to see a tractor collection near Dutton. Tony Koolen

Having a few other things going on I have not made very much progress on my Sealion. I did get the intake/exhaust manifold casting machined and mounted on the engine.

Show and Tell

Nick Jonkman brought along his model of the 1830 McCormick reaper to show progress. The item he was having difficulty with last time was the crank that provides the reciprocating motion for the cutter blade.

He has overcome the problem by making a forming jig and using softer steel (welding rod) that can be bent without needing to be heated.

Bruce brought along the sides for the gun carriage for his 4 ½" Howitzer. He also talked about a problem he had with his CAD program

The drawing allows for the possibility of both downdraft and side-draft carburetors. I have opted for the latter, partly because I want to run the return cooling water pipe along the top of the manifold (and have tapped a couple of holes for the bracket that will support it.) Don Hayes’ Emco 5 CNC Lathe

Having an interest in CNC myself I went to have a look at this. The lathe has suffered some neglect (rusty slide-ways) but Don had done a lot of work cleaning up parts so that everything moves OK. In manual mode things could be made to operate but we had less success trying to program it to do anything. The way of programing is truly archaic and with some functions not working properly we essentially gave up.

There is a parallel port on the machine that allows control through an external computer and Don has now acquired a suitable computer with a parallel port output, with the intention of running the machine using Mach3. This would be a huge improvement but making everything function the way one would like will probably involve significant work.

whereby some dimensions became messed up – it appeared to be some glitch in the program.

Matt Samko had a partly completed American style traction engine model that he had acquired. It looked as if it had been made from a kit and a somewhat strange feature was that it was designed to run on compressed air stored in a cylinder inside the boiler. (We figure it would not go very far on the air stored.) He mentioned the name "John Tom" but had not been very successful getting information on the web. I had a look and one can in fact download a full set of plans for the model Matt has, which is in fact based on a Case engine:

http://www.john-tom.com/html/SteamPlans.html

Here is the model he brought along:

Our Website

https://sites.google.com/site/bluewatermes/

TSME Newsletters

https://sites.google.com/site/tsmeweb/the-modeller

Notice: The June meeting will be the final one of the 2017/18 year. Meetings will resume in Oct.

John Lovegrove - Editor