01-08-2009, 10:07 PM
Jef. I suppose as Adrian says one could use a doming block, however it is better to have a block which has a hole right thro' it for you have to cut the dome away from the sheet of brass you are making it from. Then when you have created the tiny hemispherical dome it needs it's hole punched into it in order to create the countersink.
Brian Stobbs