Main Cylinders

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For most of the photos on this page, you can click the image for a larger picture.

	February 2023 Tony says "I'm in the process of template making for the steam chest for the second half which is on the lathe. Pics attached of lifting pins being added to the first half so I can lift half of that to sit on top of the drawing."
	Tony continues "This is a check I'm on size and make the last of the templates for the three main diameters. Templates are made of white faced hardboard from previous jobs used as drawings for castings currently on running locomotives. This helps my recycling profile. !! The profiles for the steam chest, valve chest and other shapes are already done from last time."
	April 2024 Work has recommenced on the manufacture of the cylinder patterns. Tony explains "I've enlisted the aid of another pattern maker to hep me complete what’s required to produce the cylinder patterns. To accomplish this, I have moved the pattern making side of my workshop machinery to the workshop of Ruth Davies, a master pattern maker and wood carver. The photo is the 1a core box now fastened up waiting for Ruth to finish off the ends. We’ll add some pieces to the undersides to sit well on the foundry floor and a number of drop down lift handles as the finished box is quite a weight. They will also take the lifting strops in the foundry." The 1a corebox is the bottom of of the main cylinder corebox. The core box will be the whole length of the main cylinder plus the core prints ( remember coloured in black) and the draft to allow the core to be removed from the core box. This draft also helps the moulder when settling the core in the mould sand. The core prints you will remember are the extra bits external to the pattern to allow a core to be correctly located in the hole left when the pattern proper is removed from the mould sand. If you go back to page 11, first photo, you can see the black extensions on the main cylinder pattern. These create rebates in the sand mould - the prints on the core will locate in these rebates. Tony will modify this corebox to create additional inserts to create the 1b core with the transfer port cores (see previous page)

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143 records found. Page 15 of 15 displayed.