For those of you who run electric like me and want to use the tap hole as a drain here is how i cut the bottoms off my kegs.
step 1 make jig. I would highly reccomend using two hose clamps for more secure clamping. On my third keg it kept loosing its grip.
step 2 drill guide bolt hole
step 3 use the wheel to scratch the surface and see how it fits the lid, measure 10 times cut once. The goal is a bit smaller, you can always trim bigger with a flap disc. Realize the cutting wheel will make the whole a bit wider than the scratch marks made.
step 4 use the grinder to cut two gouges opposite of each other. Check with the lid how it fits my feeling the lid lips in the gouges.
step 5 make a shallow guide cut the whole way around. (seen in pic 4) This is handy if your jig gets out of whack, break a wheel, or the wheel wears enough to throw off the radius its cutting.
step 6 start cutting through leaving 1" solid parts every 6" or so. If you make it all in one cut the lid may flex and twist loose throwing off your prefect circle.
step 7 cut all the remaining tabs of metal
step 8 use low grit ~60 flap disc to round out the inside and remove all sharpness and tune any high/low spots. If your hole is too small and lid is tight be sure to do complete circles around so you open the whole circle evenly.
step 9 use 220 grit to smooth out the lip
Step 10 hose off all the grindings and your done!
If you want a cheapo false bottom drill tiny holes in the scrap you just cut out, now you have a SS false bottom. (not my idea but wanted to share)
step 1 make jig. I would highly reccomend using two hose clamps for more secure clamping. On my third keg it kept loosing its grip.
step 2 drill guide bolt hole
step 3 use the wheel to scratch the surface and see how it fits the lid, measure 10 times cut once. The goal is a bit smaller, you can always trim bigger with a flap disc. Realize the cutting wheel will make the whole a bit wider than the scratch marks made.
step 4 use the grinder to cut two gouges opposite of each other. Check with the lid how it fits my feeling the lid lips in the gouges.
step 5 make a shallow guide cut the whole way around. (seen in pic 4) This is handy if your jig gets out of whack, break a wheel, or the wheel wears enough to throw off the radius its cutting.
step 6 start cutting through leaving 1" solid parts every 6" or so. If you make it all in one cut the lid may flex and twist loose throwing off your prefect circle.
step 7 cut all the remaining tabs of metal
step 8 use low grit ~60 flap disc to round out the inside and remove all sharpness and tune any high/low spots. If your hole is too small and lid is tight be sure to do complete circles around so you open the whole circle evenly.
step 9 use 220 grit to smooth out the lip
Step 10 hose off all the grindings and your done!
If you want a cheapo false bottom drill tiny holes in the scrap you just cut out, now you have a SS false bottom. (not my idea but wanted to share)