Timex T2N740 stem and crown
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By SwissSeiko · Posted
I'm sure this works on larger pieces, but with a piece the size of a balance staff, even air cooling can affect hardness, I don't know how you could measure it before its cooled down. But I don't know how measuring it works. When I harden my steel for turning, its held over a jar of oil and the flame is maybe an inch above it, so it can be dropped immediately. These small pieces just don't hold heat that well, and its hard to judge hardness. Do you know what the graver steel is? HSS is good for most stuff, but I prefer O1 steel as I think it holds an edge better. -
Hi There Anyone know which mainspring winder to be used for this spring type GR3271X? Thanks!
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By RichardHarris123 · Posted
For buffing crystal you need to remove the scratches, depending on how deep they are, 400 grit, followed by 600 grit , wet and dry, keep going up the grits and then polish. The 400 grit will make it look worse at first. Plenty of videos, advice on the Internet. Ps. You might be able to start at 600 grit, depending on the depth of the scratches. As for the movements, I don't work on quartz. -
By Neverenoughwatches · Posted
I was having a similar problem last week, i switched from hss to using pieces of carbide for cutting and managed to get small swirls coming off some 0.3mm cousins blue steel cutting down to well under 0.1mm before the end broke off. Feels like x40 magnification isn't enough when trying to cut staff pivot dimensions. At least one of us is mixed up here 😆 Magnetism would be a good indication of where the temperature is at.
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