In case anyone is looking to build multiple shredders or if you have a group buy, I found a pretty cheap source of hex bars.
I was looking at some hardware stores to purchase 1″ hex bar for a shredder but the only one that sold them was a little far so it meant I would have to pay for the cost of the bar plus transport or just going through the hazzle of taking a day off to go and get the bar myself, so I started to look for alternatives.
Thats when I found a Macana/Barreta (I believe you call them Jimmy Bars in US) with exactly 1″ hex shape and a lenght of 1.75m so I went ahead and purchased it right away.
I found several brands such as Surtek (model BAF175), Truper (Model BAP-175), Stanley (Model 55-150) and the best part is that the whole bar costs less than $20 everywhere (except in Costa Rica where I paid $22.60) but the 1.75m Jimmy bar can be cut into 5 shredder hex bars after cutting off both pointy ends from the bar, which means each bar would cost you around $4.52! even cheaper than the $8.74 bar I shared earlier from onlinemetals.com
More pictures. Tomorrow I’ll share some with the bar cut and milled
@strangemetalcutting because I live in Costa Rica, “cheap and pretty available” are not words that apply here when it comes to metal
I’m curious, is there any reason you’re not using mild steel or A36 hex bar? It’s cheap and pretty available.
@armbouhali yes, you could use a square tube, and yes, it was already tried.
You would need to modify the knives and spacer files to use a square hole but it’s totally possible.
Here’s a topic about it: http://onearmy.world/community/forums/topic/where-to-source-your-parts-for-precious-plastic-machines-sorted-by-country/#d4p-bbp-attachment_73938
isn’t it possible to replace the hex bar with a square bar ?
It might be easier to find and easier to make than the hexagonal one.
I know the key mechanism is not enough to immobilize the blades in place.
And I know the hexagonal shape is enough to fix the blades in place, with the shear stress shared between 6 points.
Has anyone tried a square bar instead. It can be either cut or milled from a thick enough metal sheet.
@atlanteazul A comprar macanas se ha dicho! Y con el vuelto pasamos por unos taquitos
genial!!! sencillamente genia!!!