For left handed drilling, first you need to hold the drill driver
backwards or at least left handed. Then, the chuck will unscrew from
the drill body if there isn't a left handed screw holding it on in
addition to the chuck threads, and if that doesn't happen, the Jacobs
chuck will loosen since it tightens for right handed driving. :-)
To add some actual content, Zerks come in (at least) three flavors of
fastening
NPT threads; tapered pipe threads 1/8 to 1/4" (maybe bigger, but never
saw one)
straight threads; commonly 1/4-28 or 10-32 for the small sizes, then
more larger (usually NF thread series) sizes
press in; ridges on the od to help them stay in place
An Easy-out (left handed) is the easiest for me to remove a broken
threaded version. It's pretty common to knock them off construction
machines. Usually little or no drilling, maybe a little grinding or
filing to make the end square/flat, depending on how it was broken off.
A sheet metal body slide hammer (or bearing slide hammer) and hard sheet
metal screw can remove a broken off pressed in version.
Worse case, drill a new hole (with the shaft removed) and put in a new
fitting on the other side. Or take the part to a shop with a ram
discharge machine, but it needs to fit as the machines aren't large and
be pretty valuable to be worth the cost. Or make your own edm, they are
pretty simple for home use. google home made edm
Grant KZ1W
On 4/10/2015 12:04 PM, TexasRF--- via TowerTalk wrote:
Patrick, assuming ATF means automatic transmission fluid, a wiki search
shows there are more than ten different flavors in use. Wonder which one is
recommended?
On the subject of left handed drill bits: what would the intended use be?
Drilling left handed holes? Use with left handed drill motor? Having
survived thus far without needing one I am wondering what I have missed out on.
Since easy out tools are readily available and most likely a lot more robust
than left handed drill bits seems the actual need is not great. Probably
less expensive as well and I see one tool fits several size bolts.
Now that it has come to light that drill bits can be used in place of an
easy out tool, it seems that there will be no need to buy an easy out tool
for reverse threaded bolts; a regular drill bit will work for that purpose.
Yea, it is a slow day here!
73,
Gerald K5GW
snip
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