[AT] Drill bits for drilling our old tractor steel and iron.

[Stephen Offiler]

Excellent point regarding the masonry bits, Spencer.  I had nearly
forgotten, but we actually included a masonry bit in the Vice-Grip
experiment I mentioned earlier.  We used it straight from the package.  It
didn't look real sharp, but we also made no attempt to resharpen as that
defeats our purpose.  It made a few holes, requiring a lot of downforce and
making plenty of heat in the process.

SO


On Fri, Oct 25, 2019 at 1:13 PM Spencer Yost <spencer at rdfarms.com> wrote:

> I’ll defer to others, but I just use quality high speed bits, use them
> carefully, slowly, well oiled and kept as sharp as I can manage with a high
> end “Drill Doctor”.
>
> I use Cobalt also for the really tough stuff.
>
> If you don’t need to be very precise and just need to get a hole in the
> something that is very very hard, masonry bits actually work quite well.
> They have to be new or resharpened.  But like I said I find the holes are
> not as precise.   So don’t make pacemakers, aircraft or nuclear parts with
> them. People laugh at this until they follow my advice and try it. And then
> they come back and thank me.
>
>
>
> Sent from my iPhone
>
> On Oct 25, 2019, at 3:06 AM, deanvp at att.net wrote:
>
> 
>
> The closest drill bits I have that I would call decent are a set of
> reverse direction drill bits made by Irwin that are Cobalt.  I’ve used them
> for removing broken off bolts, etc. but even those are not worth writing
> home about.  On grade 5 bolts they are ok but on really hard stuff they
> don’t cut the mustard. Cobalt drill bits do have a negative and that is
> they are very brittle. But…  what brand and version of drill bits have you
> guys found that are better than the average bear and work good on our old
> iron which seems harder than the current stuff. I’m fed up with my multiple
> indexes of drill bits that might work in wood if I was patient. On steel a
> nail might work better. :-) I know its going to cost and I’m prepared for
> that. What is the “Snap-On” of drill bits?  What have you had a long and
> successful relationship with.  However, I am convinced that no matter how
> good they are I will break anything less than 1/8”  So a set from 1/8 to ½”
> in 1/64th “  increments is about my style. Or as an alternative. What
> drill bit sharpener do you recommend? I do have a lot of drill bits that
> could be sharpened. Not sure some of them are worth it though.
>
>
>
> Dean VP
>
> Snohomish, WA 98290
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