I'm prototyping an oil centrifuge to filter out rock dust from the cutting oil in my lapidary saw and I'm trying to get the costs down. I need some 4-hole flange bearings, v-belt pulleys, framing (I would like to use some extrusion or similarly stiff metal that doesn't require welding), and a pile of fasteners to hold it together.Where might the cheapest place to source such things? Parts from TheBigBearingStore will run me about what ebay will including shipping and zoro looks like it has the cheapest 1" extrusion. Can I beat these prices? via /r/DIY https://ift.tt/2m4cgRI
