sfriedberg
Diamond
- Joined
- Oct 14, 2010
- Location
- Oregon, USA
We've got a one-off job coming up where we need to reduce the thickness of some stock 0.125" 6061 sheet to 0.098" and also cut some 0.050" to 0.070" slots the majority of the length of the part. My intention is to face off a sacrificial block held in the vise, then super-glue the sheet to the just-cut face, face off the sheet to the required thickness, then switch to a slotting cutter and cut through both the sheet and the sacrificial block. Release would be via industrial heat gun, possibly assisted by some (unheated!) acetone. Incompletely cut ends of the slots (due to slotting cutter diameter) would be finished by hand.
Area of the part is 4 to 5 square inches, so I am not worried about shear. But peeling and impact resistance concern me, especially peeling from the slotting operation which might tend to pull up on the edges of the slot. Am I going to run into trouble if we use a toughened cyanoacrylate like Permabond 731, 735 or 737 (Black Magic)? Could this be done with simple methyl cyanoacrylate like Permabond 910, or am I correct that garden-variety Super-Glue doesn't have the impact resistance to hold up to milling?
Thanks for any experience you can provide.
Area of the part is 4 to 5 square inches, so I am not worried about shear. But peeling and impact resistance concern me, especially peeling from the slotting operation which might tend to pull up on the edges of the slot. Am I going to run into trouble if we use a toughened cyanoacrylate like Permabond 731, 735 or 737 (Black Magic)? Could this be done with simple methyl cyanoacrylate like Permabond 910, or am I correct that garden-variety Super-Glue doesn't have the impact resistance to hold up to milling?
Thanks for any experience you can provide.