Well on that just a sheet of 20 gauge will take a lot more abuse that plain old plywood .Well think about it .You're blasting pine plywood with hard wood chips unless you live in the PNW or down south .
I didn't take any offense .I'll tell you though ,no chit I saw Tom blast right through 3/4" plywood in about three days with that old Lindag .He had a piece of 3/4" in the roof hauling chips with a canvas top in a dump truck because the chip hauler was down just to get by with until it got...
Well now you're talking again about "newer " chippers .Toms Morebark has an adjustable chute with a rotational deal you turn via a rollar chain .His old Lindag , chipping old beast it was could only blow about straight in .With a taller truck you had to bounce off the roof .
Okay now somebody fess up on this .Are you blowing chips off the top directly onto the aluminum or shielding it in some way as to protect it from abbrasion ..
You take a peek at those Southcos made for Aspundh which are coated with epoxy that is hard as a rock .They've blown the coating right...
You can get by with plywood but if you blow chips against it it won't last very long .Couple days with a stout chipper will blow right through 3/4" board .
As far as that goes I can't see where aluminum could hold up either for any length of time against a barrage of chips pelting it but it's...
No I'm just saying that while some might think aluminum is some miracle metal it's not .FWIW I've seen the bottoms on aluminum dumps get just as holey as steel ones given enough time .It' a choice though .
The acidic nature of wood chips will react probabaly as badly on aluminum as it would on steel .Along with the direct chemical reaction of the wood chips there is bound to be an electrolytic reaction between the aluminum bed and the steel truck frame .Aluminum is considered a sacraficing metal...
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