Stainless Steel in Shredder
Using Stainless Steel in the shredder is a real NO NO
I have been using mine for about 6 months now and has worn badly
The teeth have about an 1/8″ gap in front of them now so not cutting well at all and the sides well there is about 18thou gap on each side of the teeth to the guide
If you are going to build one please make sure you use a lot harder steel of some sort to lessen the wear
One further comment, and two questions, please!
After reading through this thread, is there any justification left for choosing stainless steel? It doesn’t sound too catastrophic to have a can of WD40 sitting next to shredders to give non-stainless parts a squirt now and then, if they are laid up, and not being used for a long time.
During normal operation, the rubbing action of material passing through should surely keep rust at bay! I am assuming that any oil on the plastic is undesirable, so.. Is lubricating the metal parts during normal operation best avoided? OR, if a small amount of WD40 gets onto the plastic, will this be removed when the shredded plastic is washed? Related to this is the question, how do you experienced guys treat plastic containers that have had engine oil, brake fluid, etc in them? Must they be washed with solvents / detergents *before* they’re added to the mix to be shredded?
My second question is, does anybody know of shredder blades that are made from engineering ceramics? My intuition still recoils from the idea of using ceramic in a tough engineering environment, but people who work with them insist that some of them are very hard, resilient, and perfectly machineable. Ceramic kitchen knives stay sharp for a long time! Some sushi chefs use them. Does anyone know if engineering ceramics would cut well, & be long-lasting in this environment?
the most applied theory in daily life is the harder the wearless..
here’s just reference for comparison:
Hardness unit: hardness vickers
I choose stainless steel 304 and common steel 1045 because they’re mostly used in daily life.
<span style=”color: #000000;”>Just reference, feel free to critize 🙂
but, to be note: wearness properties actually is not all about hardness, there are others parameters like size, angularity, applied load, crystality, etc.
stainless steel (SAE 304):
Steel SAE/AISI 1045
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