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Re: Old fashion petrol blowtorches for heat treatment
The annealing oven is a idea of making the hardening of steel into an exact science and as Patrick and I know this is not the case, there were problems with the oven in the Imprimerie National and ge…2 -
Re: Advice on wet bench grinders
Hi Ramiro, You should never use a dry bench grinder on any of your gravers this will take the temper out of the steel and render it useless for cutting. The wet stone grinder that you have shown is g…5 -
Re: Working method: l'indication
On the course we attended (myself & Patrick Goossens) at the Imprimerie National, the most important thing when cutting the punch was the l'indication, so the big file was used to rough out the p…1
