thinking about making a slip roller, (out of scrap)

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I have need of a slip roller at least 50" wide, and would like to be able to do 10 gauge,  and would like to use it for rolling rings out of flat as well,  at the ends, of the machine, I have looked online and most start in at $800 and up fast, and there only rated for 16 gauge, first if I would order in steel shafting of 4" I am reasonable sure my costs would start to rival a bought unit, so the thought I have is to use heavy wall pipe (thinking 4" in diameter or near that), and a 1.5 shaft (or near that) running from end to end, with filler rings on the ends, to support the pipe,  (hoping I can find some type of drill stem some where).HERE IS THE QUESITON, is there any filler material I could pour in the center of the pipe to make it solid that would not disintegrate to dust in time,   (like concrete)  the idea is to make the pipe work like solid shaft,  any type of epoxy type filler that would be affordable?
Reply:You are going to need solid shaft probably closer to 5" for that width and thickness material.  And yes, just two rollers will likely cost more than $800.  I have looked into this a bit and keep hitting dead ends on building a narrower roller for up to 1/4".  I've managed to come up with solid shafts at an auction and some heavy plate for the frame, but haven't gotten any farther.My name's not Jim....
Reply:A normal 10 guage slip roll 50" is going to be 5" diameter rolls, used they go for around 4-5k. Good luck with your build.
Reply:Anything you can fill the pipe with that will be strong enough will cost more than solid steel. Haunt used machinery sites and auctions for a deal.
Reply:Do a search for "chockfast red" for the fill. Rice sized quartz pieces with an epoxy binder. Very formidable stuff. Material sim to this is often used to make "castings" for CNC machine tools. Keep in mind that the pipe will become the tension member (weak member) when the rolls are under pressure. The fill is more than strong enough for compression.