On 1/21/2020 4:39 PM, Terry Coombs wrote:
> Anybody used this stuff ? Quite a few positive comments on Amazon ,
> but who knows how real they are ... anyway , I've gotten tired of
> burning up drill bits so I bought a couple of pint bottles . Probably
> last me the rest of my life if it's as good as the reviews I read .
I won't even bother. I tap a lot of holes, and use Tap Magic all metals
for all manual and semi manual tapping. On the CNC mill I do a fair
amount of machine tapping with TC tap holders, and I just use the same
SC520 at around 6% I use for everything else I run coolant on. In
steel... Yep I put a few drops of Tap Magic on the edge of each hole to
run in before I press start.
I am probably wasteful with the TapMagic, but its still cheaper than
breaking a tap after turning a lump of alloy into several hundred or
thousand dollars worth of blood sweat and tears. I buy it by the gallon
and pour it into smaller containers I have all over the shop. I just
opened my second gallon since I started using it several years ago. A
buddy of mine originally gave me a small can of it as a thank you for
modifying some roller forming dies for him.
I've also tried Rapid Tap, and its ok. I've got the container of that
setting over by the lathe and just use it as regular cutting oil From
MSC if you have an account Tap Magic was cheaper last time I looked.