Pattnmaker
Stainless
- Joined
- Nov 2, 2007
- Location
- Hamilton, Ontario
I built a fixture last week for machining matchplates. The outside length for the 2 sizes I make the most are the same. Because I typically have to machine the entire top I built pockets in the ends to accept pitbull clamps. I asked my local tooling supplier for pricing on the knife edge clamps. He quoted me the blunt ones and I didn't notice. When they came in I had a job I had to get out of the door so I used them rather than returning them.
The plates I need to hold down are 27.5"×23.5" and range from 5/8" thick to 6" thick. Unfortunately I found the 4 pit bulls didn't pull the stock down. They held it securely but all 4 corners were different heights. Varying by up to .02". Do the knife edge pitbulls do a better job of pulling the part down? I had a work around on this plate but won't always have that luxury. I will buy the knife edge clamps if they will solve the problem but if they won't I would rather save the money.
The plates I need to hold down are 27.5"×23.5" and range from 5/8" thick to 6" thick. Unfortunately I found the 4 pit bulls didn't pull the stock down. They held it securely but all 4 corners were different heights. Varying by up to .02". Do the knife edge pitbulls do a better job of pulling the part down? I had a work around on this plate but won't always have that luxury. I will buy the knife edge clamps if they will solve the problem but if they won't I would rather save the money.