Cutting tinplate with sacrificial plywood.
Entry posted by Maurice Hopper
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This follows on from "Recycling" and further back "Exeter Garden Railway Show".
After a distraction or two the Loco Works has open for a day to begin the fabrication of the cab. Rather than try to saw the thin tinplate over my normal inverted cutting 'V', I fixed it to some 4mm ply using double sided tape. In addition the cuts were marked out on sticky labels applied to the surface that did not want to take any sort of marking. This allowed a more robust work piece to be handled without getting fingers cut (not that I have cut them yet!) by the sharp edges, and the marking out to be easily seen. It also meant there was always support for the thin sheet for both drilling, cutting and final filing. Despite having to cut more material, I suspect this also lengthens the life of the saw blade. Indeed one blade did the whole job and still has more life in it.
The big cut out on the front is to straddle the battery tray and will be covered by the control desk on the inside and the front bonnet of the loco outside the cab.
The works are closed tomorrow for private celebrations and will reopen on Friday to get the cab sides cut.... and possibly even a completed cab put together.
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