Fingers crossed it'll cut ally

[blackburn mark]

75mm oil filter seals, iv no idea why i save them when i service my car?


1mm outside diameter hypodermic needles, i drilled the seals with a .75mm drill (by hand)

squash for unusual shape

plenty of holding force, the first seal is happily holding the weight of the second two blocks, i can slide each block around to square up but there is enough resistance for reasonable machining especially in acetal plate

i have used the smaller pads to cut 28mm washers out of 1mm alli, i had one failure with it creeping... it takes a light touch. they will be fine for my engraving job