THE
VOL 35 No.9
MAY 2005 THE MODELLER
WEB SITE: www.tsme.ca TSME CHAT LINE: tsme@yahoogroups.com
There’s lots to show and talk about at our next meeting – make it a date !
FRIDAY 13 MAY 2005 AT 8.00pm; usual place -
FOR THIS EVENING’S MEETING, YOU’LL BE HEARING FROM: (as well as, quite likely, some others)
BUT FIRST - A REMINDER AND A REQUEST: Please leave the front few rows for those folk who might find it more difficult than you do, to get to the higher level seats.
RICHARD TROUNCE has some good tips on CNC programming and he’ll walk us through this,
SAM ROTA will give a presentation on his shop, with pictures,
DAVE POWELL will reveal some magic about the 3 Jaw Chuck,
DON CARR will give some hints on Locomotive Boiler Piping,
BERT deKAT will show some shots of
the Stirling Engine Show in
DAVE SAGE is going to give some hints on Metal Polishing, and
GERRY REED will give us an instructional talk on the use of the Lathe Steady Rests
If you have a project you are currently working on, or recently finished – please bring it along and we will do all we can to fit your item into the program.
WHAT’S UP & COMING : MEETING
DATES 10 June @
UP COMING EVENTS:
THE
THE GEORGIAN BAY STEAM SHOW: August
Civic
EXTENDED INTERMISSION: We haven’t had one of these TSME get-togethers (model show and lunch for members and friends) for several years and the suggestion has been made that we might do another one. Please think about this and whether you would participate by bringing along your models and/or coming along anyway. We’ll have a show of hands at the May meeting to see if this is viable.
NO LONGER TO STAY OPEN AFTER THE MEETINGS –
The restaurant commonly known as David’s to many TSME members will no longer stay open for those that wish to get together after the meetings due to lack of numbers.
IN CASE YOU MISSED THE APRIL MEETING
JIM SMALL talked about pattern making and showed a small pattern mounted on a match plate. Also, some split patterns and Jim explained how they are made and then set in the boxes for sand castings. He also explained the requirements for core boxes for the internal shape formation I the casting. It is very important that patterns have a draft – to allow withdrawal from the sand. The tools required for making patterns are such items as a jig/scroll saw, sander (belt and/or disc), band saw, planer and that to start ! There is no need to use exotic wood for the number of castings that a model engineer will produce. It is important to put fillets in all locations of sharp corners so that the sand will not break away. Jim recommended a book on Foundry Work by Terry Aspen. Jim then went on to show a DVD very nicely put together and filmed by Dave Sage on the making of a pattern for a component of his Marine engine. Nicely photographed and well explained. We look forward to the next installment - on pouring the casting.
ROY ELLIOTT then showed his
freelance 3 cylinder I.C. Engine he has made for a 7 ¼” Switcher Loco.
100cc, 1 ¼” bore x 1 ½” stroke, finished in 2002/3. The loco pulled
about 750lbs.
ERNIE HILL showed his Case Traction Engine’s Flywheel complete with clutch and clutch arm. Tim explained the workings of the clutch.
DAVID BOWES showed a Vertical Cylinder Oscillating Engine that he has just completed. He won the castings at Cabin Fever. Dave said that he found the castings of good quality and easy to machine. He demonstrated it running on air at quite a low pressure, about 10psi and at 100rpm approx.
BILL HUXHOLD has just started the
construction of a Poppet valve Engine similar to a Lentz Engine he new of and
an example of which he was able to track down still in existence in
DON CARR explained the use of flanges in Locomotive Piping and how to design them for ‘O’ ring seals for steam and/or water tightness. For steam assemblies using ‘O’ rings it is best to use Viton ‘O’ rings the are able to take temperatures up to about 400°F. Next time Don will speak about other fittings for tight sealing of pipe connections.
ALAINE LABBE showed the Dividing Head he is making which will use a 40:1 gear drive. For the plates, Alaine is ingeniously using a wood block former the same diameter as the plates, and then using Power Point software to set out the spacing for the hole drilling, rotating the plate-block combination to locate each hole for drilling each plate that is mounted on top of the wood former
TSME LAPEL PINS & CRESTS: We have a stock of both. $3.00 each or one of each for $5.00
WANTED: by DON CARR: About 15” long piece of Soft Copper Tubing – 7/32” O. dia. x 5/32” I. dia.
FOR
FOR
WELCOME TO NEW MEMBER GORDON BRUCE