Yes - the tilt means that there is a small draft to the steel plate, apparently like a cutting rake, required for it to act as a stamping die.That is interesting. Is the blade tilt essential, when cutting the steel plate though? If not, it seems like an ideal job for a laser cutter.
Regards
Dan
The 'draft' only needs to be there if you are making a single part clapper punch. Angling the blade in this situation means the top and bottom of the piece of steel are in the same place when the steel is flexed apart so form cutting edges. Doing it this way has the advantage of not needing additional registration of the upper and lower plate. Laser cutting could be used to make similar punches but they would have to be separate pieces with registration holes to fix them together - one piece would be cut for the inside of the punch and another for the outside. There would therefore be more waste steel, but the punch could also be set up to punch from the middle of a sheet of brass or plastic instead of only the edge.Yes - the tilt means that there is a small draft to the steel plate, apparently like a cutting rake, required for it to act as a stamping die.
The 'draft' only needs to be there if you are making a single part clapper punch. Angling the blade in this situation means the top and bottom of the piece of steel are in the same place when the steel is flexed apart so form cutting edges. Doing it this way has the advantage of not needing additional registration of the upper and lower plate. Laser cutting could be used to make similar punches but they would have to be separate pieces with registration holes to fix them together - one piece would be cut for the inside of the punch and another for the outside. There would therefore be more waste steel, but the punch could also be set up to punch from the middle of a sheet of brass or plastic instead of only the edge.
Given my success with a piercing saw, I think 'soddering' sums it up rather well.Apart from calling it "soddering" it translates across the pond reasonably well.
I found that, as mentioned in the video, the finer blades are easier to handle. The 8/0 blades have 35 teeth per cm, so that there is always more than one tooth in contact.Given my success with a piercing saw, I think 'soddering' sums it up rather well.
The problem with 8/0 blades is (as with all the blades) the higher the number of noughts the thinner and shallower the blade. Hence the easier to break. But as with lots of things in life, it's all a bit of compromise. You need the high number with more teeth per inch or cm for the thinner materials which will also get you sharper corners, but you need the lower numbers to give you the strength to avoid breakages.I found that, as mentioned in the video, the finer blades are easier to handle. The 8/0 blades have 35 teeth per cm, so that there is always more than one tooth in contact.
Michael