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That is actually a really good question. I have so far solely been measuring relatives, not absolutes. I would have to do some test passes to know. What is your experience on the matter?

You're correct, the 3" belts would be too wide for the standard wheels (or rather, the belt would hit the grinder when centered). So I cut them at 2.5". That way it covers the 2.4" magchuck perfectly, while it'll still fit the wheels fine.

Hi guys! I've been using the SGA with 3 inch belts for a couple of days now. It's great! I can do all my pattern sizes without tracking the belt. It's nice to be able to flatten tangs so quick and easy now, no more hand rubbing on the surface plate. But then it struck me, I still need to hand...

I totally agree! I’ve looked at SGAs for a while but thought it would be too hard to build one myself. I really do appreciate you sharing your build, it was very inspiring!

I did the finish work today, so I updated the pictures. The only thing missing now is the 3 inch belts, they should arrive this week.

Thanks guys!

Thank you guys for the inspiration! I've been looking for a better way of surface grinding, my process today involves my belt grinder, disc grinder and surface plate. But it's time consuming and not really giving me the precision I'd like. So I came across One Armed's build, and then KenH's and...

I'm pretty new at this milling business. I saw your magnetic chuck which looks nice. How do you mill those slots so nicely? What kind of end mill would I use? Full width and several passes to get the depth? A pilot slot with a more narrow end mill and then finish with the correct width? Thanks!

Thanks! Do you strip the abrasives at the splice for the higher grit, which have thinner backing? I've seen the technique being mentioned a couple of times when using SGAs.

Thank you guys for this interesting thread. It seem you've made some nice pieces of machinery for a fraction of what it would cost to buy turnkey. What about belts? What kind of abrasives and grit do you use?