Heard about someone out here in so cal that called their process "grinding" glass. Was supposedly a specialized process they do to glass high rise buildings. Was interested in car hobby, but was too busy with industrial accounts to bother.
Sounded like they had machines or processes to cut the labor time down. Still IIRC, it was close to new glass costs.
Shop that had it done was very impressed that normally uses lots of resto glass.
That's pretty much what I found out - if you look online there are outfits that restore storefront glass in situ (replacing a huge pane of that due to a scratch is a major expense). In theory this could be a good option, but I didn't take it further because a) I assumed that they wouldn't really be interested in auto glass and b) I imagine that if they broke it that would be on me, and I'd rather not take that risk without a better idea of their track record for this type of glass
