Ed of all trades
Elite Member
It is important not to use aluminum that is to soft for the disc that fits the bottom of the liner, a lot of pressure is put on them. I would also make an iron disc to reinforce the aluminum. Something about 1/2 " thick so it does not cup under pressure. I would think about making 2 aluminum discs if I were to be going 500mi from my shop. Also remember to make a piece to hold the 3/4 rod at the bottom so you can pull the new liner into the block. Hope it all goes well. Ed