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Just starting to remove the old stuff on my 49 so I can install a MII and was wondering if anyone has any ideas on how to remove the rivets, I don't have a cutting torch so if someone has a tip using normal hand tools that would be greatly appreciated!
Take an angle grinder with a cut off wheel in it, make a couple of crosscuts in the rivet head, smack it with a hammer and chisel to knock of the scored pieces. then you can take a hammer and punch and knock out the body of the rivet. You could also grind a small flat spot on the rivet head, use a center punch to mark it and then drill it out.
You can use an air chisel or if you don't have a compressor you can use a grinder, either a die type air or electric. Just grind down the rivet head flush and punch out.
If you don't have one, a 4" angle grinder can be purchased for <40.00, and is worth every penny! buy a handful of 1/16" cutoff disks and a 1/4" thick grinding wheel as well as a couple grits of flap disks when you buy the unit. Keep it handy you'll be reaching for it constantly for cutting grinding and sanding tasks. I use mine so much I bought a second one so I could keep a cutoff wheel on one and a flap disk on the other so I wouldn't have to swap disks so often. I buy my cutoff disks and flap wheels online they are much cheaper that way (you'll go thru a lot of them). I use http://stores.ebay.com/Lehigh-Valley-Abrasives for mine.
a 4" angle grinder can be purchased for <40.00, and is worth every penny! buy a handful of 1/16" cutoff disks and a 1/4" thick grinding wheel as well as a couple grits of flap disks when you buy the unit. .
Harbor Freight has them on sale for around $16 - I bought one to try, and it worked as good or better as my older Sears unit does. I have bought two more since, giving me 4 grinders and I keep a different head on each, including one with a cup wire brush.
The Sears unit is used the least!
You do have to be careful - I see that HF has two different models, with the cheaper one about $1.00 less. The more expensive one has more power and will fit a 4 1/2 inch head - well worth the extra $1.
Please take the money you save and buy a full face mask for protection - I also wear a hat to keep the filings out of my hair too.
Ditto on the HF 4 1/2" angle grinders. I also have four of them, each with a different setup on it (cutoff wheel, flapper disk, grind stone, cup brush).
HF also sells an inexpensive air hammer that works really well. Saves a lot of scraped knuckles and smashed fingers. It comes with the punches and chisels you'll need for those pesky rivets. Replace them with grade 8 bolts when you reassemble.
with a backing pad, 24 grit open coat sanding discs(SAIT is the brand we use) make quick work of any metal in its path. Compared to a hard wheel they leave less of a gouge. We all use hitachi electric grinders at work. They weigh a little less than most others, and last a long time. And like Ax said, buy in bulk...lots cheaper.(box of 25 for $20)
Thanks for all the replies, ground the heads off and used an air chisel to shoot the rivets across the shop. I did find out that a 3lb hammer can make blood shoot out from under your fingernail. Rookies always do things the hard way!