THE
VOL 34 No.5
JAN 2004 THE MODELLER
Here’s wishing all you TSME folk and your families a wonderful Christmas and a successful, safe, healthy and prosperous year ahead.
That white stuff is now definitely appearing on your driveway right in front of you!! Once you have put the shovel away, come any way you are able ! Whatever way you choose to travel please drive with care and come and join your fellow members for the January 2004 meeting. See you there on
FRIDAY 9 JANUARY 2004 AT 8.00pm, at
Don’t forget to pay your $2.00 parking fee and to leave the ticket on the dash !
WE’RE STILL IN OUR 70th YEAR – IN THIS EVENING’S PROGRAM, YOU MAY EXPECT TO HEAR FROM:
JERRY REED – Then and now – a discussion on Tool Making
JIM SMALL – Jim will give Part B of his talk on making a casting – this time on molding and core making
TSME MOVIE VIDEO, Scott Barrie has completed a video showing a history of TSME and what we enjoy with the hobby of Model Engineering,
GEORGE COCKBURN will bring in his Gauge I loco and freight wagon to talk about their construction
ROBERT WYSS will have something of interest to talk about
DAN O’CONNELL has something to tell us about his “Spider Wacker”
IF
YOU HAVE A PROJECT YOU ARE CURRENTLY
WHAT’S UP & COMING : MEETING DATES 9 Jan 2004, 13 Feb, 12 Mar, 9 April, 14 May, 11 June
TSME LIBRARY There still appears to be many books that are outstanding and have not been returned. Please check your bookshelves and bring ‘em back, so others can enjoy them.
HOW THE LIBRARY OPERATES - Just to repeat again ! 25¢ per book per month. To take a book out – remove the card from inside the book, write in your name and the date, and file the card in the small box provided. Deposit 25¢ for each book. If you intend to take the book for a further month, then bring it in, put 25¢ in the cash box and add the date to the card. Repeat this every month that you intend on having the book/s. When returning the book, take the relevant card from the box, cross off your name and insert the card in the book. Return the book to the library shelf. Easy - ain’t it !
IN CASE YOU MISSED IT – THE DECEMBER MEETING
RICHARD TROUNCE first explained the principles of the heat pipe, that can transfer heat from one end of a closed pipe to the other just by evaporation of a liquid at one end – where the heat is applied, and heating the other by the vapour at the other end as the vapour condenses. Richard briefly explained the basic function of the locomotive boiler then went on to explain that the superheater both dries the steam and the superheats it, greatly increasing the specific volume of the steam – which acts as a gas when superheated. This increases the efficiency of the boiler and thus the locomotive. Model boiler superheaters need to protrude into the firebox to gain full benefit of the heat source. Stailess steel should be used in the their construction and for best results the ends in the firebox should be stainless steel welded. Silver soldering won’t withstand the heat.
JIM SMALL explained the basics of pattern making – there are two types – loose and matchplate patterns. Patterns for our minimal or one offs are best made in wood – pine being easy to work. Cores are used to make the bores in castings. The vertical sides of a pattern require a taper from between 3 and 5 degrees to allow the pattern to be withdrawn from the molding sand after tamping up. Allowance needs to be made for shrinking of the molten metal – brass, bronze and iron shrink about 1/8” per foot. Extra metal must be added to give a machining allowance where machining will be carried out on the cast faces. Inside corners should not be sharp – about 1/8” minimum.
BILL HUXHOLD showed his Triple Expansion Engine Pair now fitted with their (tiny but very sweet) Reciprocating Sea Water Condenser Feed Pumps. Bill also explained how he machined the new shades for his lathes from aluminum bar. First boring out then following with a form tool to get the inside shape. Then used a chucking arbor to hold the piece to turn and form (using another form tool) to finish the outside. Bill explained that the size of the form tool can induce chatter, and this can be solved by turning the lathe by hand to machine the chatter marks out.
REMO COSOLO showed how he had adapted a small lathe for grinding tapers on small shafts. The lathe motor is used to drive the piece being ground, and a second (sewing machine motor) drives the grinding head.
KYLE SIMONS showed a short video recording of his interview on the Discovery Channel talking about his interest in Robots,
ALEX BARRIE showed the Vise he had purchased from Busy Bee and explained how badly out the flat surfaces were. He was able to get them all surface ground with the help of DON CARR. Alex is now a happy camper as the vise has now the accuracy he wants, and that it should have had in the first place !
LARRY
DOYLE showed his part-finished Wood Plane – a “Norris Style”
plane, and the chunk of Ebony he intends to use for the final handles. The
brass casting came from St. James in the
SOME TIPS:
Never draw what you can copy,
Never copy what you can trace,
Never trace what you can cut out and trace around.
You can always find what you are not looking for
The Law of Revelation: The hidden flaw never remains hidden
FOR
WANTED: by DON CARR. Parallel Machine Files for an Oliver Die Filer. The files would be 8” overall.
WANTED: by ROBIN COLLARD. Thread Dial Indicator for South Bend Bench lathe, Model ‘A’.
WANTED:
RETIRED PERSON with machine shop skills to work part-time in the Hwy 404 and
WANTED: by RON MELVIN. Any back issues of “Strictly I.C.”
FOR
FOR
SUPPLIER
CHANGE: HARTLAND MODELS has been moved from
WELCOME
NEW MEMBER: