No hammerdrill for tapping. For 14 years I used mostly DeWalt nicad drills and liked them, along with a Ryobi and a pair of Hitachi which proved not to last long enough. The DeWalts were all 18V Nicads with the higher AH batteries. The just this year I bought a Dewalt 20V lithium that has 0-2000 rpm on high and it has another nice feature, it has a belt hook. While I don't hook it on my belt, I do use a 3/16 nylon rope over my opposite shoulder and I hang it from there. The drill came with 2 -2AH batteries, but I had 2 4AH lithium batteries from other DeWalt tools and I use them. The drill is lighter and turns faster than any of the old 18V Nicad drills I had used for those 14 years, and it weighs far less which is handy when tapping hills that are real steep. This new drill is my best ever. The only issue with Lithium, is that it essentially gives no warning when the battery needs charging, one hole works good, the next it stops. But I have spares right with me. When I first used this new drill I got about 100 holes drilled on a charge using the 2AH battery, but it had only been charged once. I read someplace that a lithium works best after 3+ full cycles. Since then I've only used the 4AH battery and that has more than 3 cycles on it. I have not had that size quit before I quit.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.