THE
VOL 34 No.4
DEC 2003 THE MODELLER
That white stuff is now likely appearing on a driveway near you!! Once you have put the shovel away, get you bike out and peddle down to our next meeting, or if you enjoy the winter mode of skiing, come that way if you wish ! Whatever way you travel please drive with care and join your fellow members for the December meeting. See you there on
FRIDAY 12 DECEMBER 2003 AT 8.00pm, at
Don’t forget to pay your $2.00 parking fee and to leave the ticket on the dash !
IT’S OUR 70th YEAR – IN THIS EVENING’S PROGRAM, YOU MAY EXPECT TO HEAR FROM:
JERRY REED – Then and now – a discussion on Tool Making
RICHARD TROUNCE – will give a talk on Superheaters – part 2
JIM SMALL –Jim will talk about the steps in making a casting – Part A – Pattern 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,
DAVE SAGE – will demonstrate the running of his completed Fairbanks Morse Hit n’ Miss Engine
ALEX BARRIE – has been squaring up his Vise and will explain how to check this – some Vise Advice!
IF
YOU HAVE A PROJECT YOU ARE CURRENTLY
WHAT’S UP & COMING : MEETING DATES 12 Dec, 9 Jan 2004, 13 Feb, 12 Mar, 9 April, 14 May, 11 June
TSME LIBRARY There 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. 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 books. 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 NOVEMBER MEETING (notes by Dave Banham – many thanks to Dave for recording these notes in my absence – Dave Bray)
BILL HUXHOLD gave a very detailed talk on making piston rings, with the usual fascinating example of his work to pass round the membership. Bill made his first rings at the age of 16, as an apprentice. The smallest ring he has made is about 5/16". All rings are made of cast iron and are machined slightly oversize so they are compressed when in the cylinder. For a ½" ring, the ring would be machined 0.008 to 0.010" oversize. Bill makes the rings with a slit at 45 degrees which he cuts with a jewelers saw while holding the ring on its machining mandrel. The rings are machined on the mandrel with a slight eccentricity so they naturally want to spring toward the cylinder wall.
ART GORDON spoke about the building and use of a Ball Turning Attachment he built based on the George Thomas design (Model Engineer Vol. 144 Nos. 3578 & 3579 Pub Feb 1978). The attachment is straightforward to use but Art offered a number of observations and cautions. It is important to locate a datum for the radius of the ball, Art found a I/8" drill rod and a 6" scale allowed easy location of the datum. There must be an undercut to half the diameter of the ball cut prior to cutting the actual ball. Art recommends that the ball is machined, using 0.005" cuts at a slow speed (approx 85 RPM). G. Thomas in his articles provides various holding devices for subsequent machining operations on the ball, one of which was shown by Art. Art also mentioned that prior to staring the project, he gave his 3 jaw chuck a good cleaning and restored its accuracy, and members may wish to consider similar maintenance!
BURT DeKAT described a simple, small drill honing guide for #60 and smaller drills. The device was described by Wilding in the early 1990's. The device looks like a butterfly, with the body a pin chuck holding the drill, and the wings with small wheels at the end form the guide for honing the drill angle. By inclining the jig of the vertical the relief on the cutting edge is created. The guide is used with a simple flat honing stone.
ROGER COLE showed a picture of his latest magnificent ship model, a plank on frame British naval cutter of 1777. The model is made of boxwood, and the sails were made of 60 year old tracing linen. Roger suffered a number of misfortunes during its building, and is pleased it is completed and he is having better health! As a commissioned model, he is looking forward to the owner coming and picking up the ship.
REMO COSOLO has made 6 violins and needed a device to 'break them in". He built a device to bow the violin as the violin needs to be bowed for a considerable amount of time prior to it becoming mature in sound. He demonstrated the device and its rendition of several well known violin tunes (most hard to recognize). The reason for building the device is the shortage of human volunteers to play these immature violins.
DAVE KERR, a past member from
many years ago, visited us from
DAVE SAGE explained the building of a drip oiler for his Hit and Miss Engine. Dave founded and exploded view of an oiler on the Internet, and created scale drawings using AutoCAD. The building went fine other than getting the oil to drip through the sight glass at the bottom of the oiler. The oil preferred to run round the glass rather than to form drips and drop through the glass. Finally having created a small pipe at the top of the glass, the viscosity of the oil was overcome and gravity formed drops which could be counted through the sight glass.
ALEX BARRIE described a Thread Dial Indicator he built for his lathe. In order to cut the gear that engages the lathe lead screw he needed a dividing device and so diverted to build a dividing head. The dividing head and the TDI were both displayed on the bench. Alex also made a Quick Change Tool Holder for the lathe and explained how the tool holders are locked on the tool post. He recommended the Quick Change tool holder and said it significantly increased his productivity in the workshop. For a young machinist, it seems his productivity is remarkable!
DON CARR described the
machining of his cylinders for his 3½"
PAUL STEARNS described metal forming of an aerofoil using urethane formers. Urethane dies are made and enclosed in a metal container. Urethane will cause the metal to form and then relax a little. By a series of experiments the amount of relaxation can be plotted and taken into account when the die form is designed and built. Urethane can be purchased to make the dies at Smith raft on the Queensway under the name of Prothane. The positive for the urethane die can be easily made using wood and car body filler.
ROBERT WYSS showed some slides on his experience moving a very heavy shaper down his basement stairs and up on to a bench. He reminded members that they should always secure heavy loads with one more tie down than they think is necessary!
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’.
FOR
FOR
FOR SALE: By GERRY REED: Atlas Horizontal Mill – good condition. With mandrels and some spare parts.
WELCOME NEW MEMBER: No-one this month