jlrftype7
Samba Member
Joined: July 24, 2018
Posts: 3577
Location: Chicago
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 Posted: Tue Nov 12, 2019 12:10 pm Post subject: One more Drill Bit for your Broken Bolt blues |
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Mods, feel free to move this as need, wasn't sure of the right Forum to post in:....
Recently I needed to 'dissolve' 2 lug studs on an older Jaguar Sedan due to the really bad habit of their small lug nuts seizing to the studs, then shearing in half when you try to remove the rounded lug nut with the usual special Removal Sockets made for rounded nuts of all kinds.
So, it's Drill time. Only, due to fairly robust construction of the Lug Studs, regular Drill bits don't really make a dent on these studs, which is weird, but true.
Enter the Matco Hyperstep Drill Bits. These aren't mine, I had to borrow them for the work, and WOW, did they ever work, stunning actually.
I'm adding pictures so you can see how to apply using the Drill bits to broken bolts and studs on your VW. You don't need to buy a whole set, Matco will sell single bits as needed, this would allow you to just buy what you want, as needed for an exhaust stud on a Cyl. Head, etc.
The tip of the drill bits is where the Step wording comes in. They look like tiny versions of a Unibit on their cutting edge. VERY fast cutting, but you have control as well, so if you don't want the bit to self feed with hand drilling, it won't. I went the normal Pilot Hole method, then up 2 sizes at a time after that. What I noticed right away with the larger bits is that once you run out of the Pilot Hole and bottom out as normal, these bits just keep drilling almost as easily as if the smaller Pilot Hole was still there.
They're just that aggressive and sharp. I used regular old Sulfur Cutting Oil since the work was all steel, the drilling temps seem to stay way under what a normal 118 to 135 degree bit tip profile would have given me for this job, so the HyperStep Bits seem to cut cooler as well.
I haven't had a need to add to my drill bit collection in years, my 'Good" set from Wurth, the old Lighting Drill Bits was my go-to set for anything that my regular Cobalt Drill Bits were struggling with. Not any more, I'll have to get a set of these Drill bits from Matco....
I doubt Matco makes them, but I think for now they have a sales lock on the bits until that expires and we see them for sale elsewhere. Matco is sweetening the deal with a Lifetime Warranty on the sizes above 1/4" I think.
https://www.matcotools.com/catalog/power-tools/accessories/drill-bits/best-drill-bits/hyper-step/
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'68 Westy- my first VW and vehicle/Bus- long gone.- sold it to a traveling Swiss couple....
'67 Type 3 Fastback, my 2nd car- gone
'69 Semi-Auto Stick Shift Beetle-gone
2017 MINI Coopers, our current DDs
‘84 Tin Top - Hilga....Auto |
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