Reddit reviews Greenlee Drill/Tap/Countersink, Hss, 10-24, DTAP10-24
We found 2 Reddit comments about Greenlee Drill/Tap/Countersink, Hss, 10-24, DTAP10-24. Here are the top ones, ranked by their Reddit score.
Complete hole drilling, tapping, deburring and countersinking in one operation with power drill saves labor and timeBack tapered beyond tap to prevent thread damage from over-drillingDeburr/Countersink also provided on bit beyond back taperMade from Hardened high-speed steel vs carbon steel for longer lifeDesigned to tap up to 10-gauge metal
you can buy a bag of ground screws with pig tails already attached to them. bag of 50 is about 20$.https://www.amazon.com/Grounding-Pigtails-Ground-Screws-Pack/dp/B00CDVJA0A/ref=sr_1_2?ie=UTF8&qid=1495112568&sr=8-2&keywords=ground+wire+pigtail
put those in the metal boxes. Most metal boxes already have screw holes in the back of them for a 10-24 screw but some do not. If yours do not buy one of the drill and tap bits made by Greenlee https://www.amazon.com/Greenlee-DTAP10-24-Combination-Drill-10-24NC/dp/B000FCGRWI/ref=sr_1_7?ie=UTF8&qid=1495112488&sr=8-7&keywords=drill+and+tap+bit
you will need a bit holder for the drill to extend it deep enough into the box. https://www.amazon.com/Tonsiki-Screwdriver-Holder-Extension-Handheld/dp/B018702HQ4/ref=sr_1_6?ie=UTF8&qid=1495112723&sr=8-6&keywords=bit+extension
something like that, you will want a locking one so you can pull the bit back out.
the drill bit/tap can be a bit finicky; you go from high speed drilling to tapping in a second and if you push to hard or don't slow down, you can break the tap in half. Go slow and be prepared for it to change. Hopefully the bit wont go all the way through the back of wall. most of the time it wont because metal boxes are mostly shallow and have room inside the wall for the bit.
GFCI's do not work well without a ground and neutral. without seeing the actual wiring in person, I cannot tell you how to fix that. Do all the receptacles read as having a continuous ground? Maybe use a gfci breaker instead of receptacle?
I used this tapping bit and this cutting oil and they worked marvelously.
And to re-state the re-stated: Take your time.