GRK - Caliburn XL Screw - Into Concrete -- Bits ?

 
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Old 07-16-2017, 08:54 PM   #1
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GRK - Caliburn XL Screw - Into Concrete -- Bits ?


Anyone tell me if only the GRK 1/4" blitz bit can be used with the 1/4" x 3 3/4 mushroom head concrete screws ?

Are there difficulties using other 1/4" masonry bits such as Bosch ?

I can't seem to determine from the GRK literature if it's a "must" for the Blitz bits ?
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Old 07-17-2017, 07:57 AM   #2
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Re: GRK - Caliburn XL Screw - Into Concrete -- Bits ?


Quote:
Originally Posted by We Fix Houses View Post
Anyone tell me if only the GRK 1/4" blitz bit can be used with the 1/4" x 3 3/4 mushroom head concrete screws ?

Are there difficulties using other 1/4" masonry bits such as Bosch ?

I can't seem to determine from the GRK literature if it's a "must" for the Blitz bits ?
I don't see anything stating in the cut sheet saying you need to use their special bits.

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Old 07-17-2017, 11:48 AM   #3
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Re: GRK - Caliburn XL Screw - Into Concrete -- Bits ?


No special bit needed, just use the right size.
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Old 07-17-2017, 01:48 PM   #4
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Re: GRK - Caliburn XL Screw - Into Concrete -- Bits ?


No reason to use GRK drills. Seems strange that GRK makes great screws but not as good drills or driver bits.

We have standardized on Hawera Drills, GRK Fasteners, driven by Wiha Terminator Bits.
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Old 07-18-2017, 01:21 PM   #5
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Re: GRK - Caliburn XL Screw - Into Concrete -- Bits ?


Quote:
Originally Posted by We Fix Houses View Post
Anyone tell me if only the GRK 1/4" blitz bit can be used with the 1/4" x 3 3/4 mushroom head concrete screws ?

Are there difficulties using other 1/4" masonry bits such as Bosch ?

I can't seem to determine from the GRK literature if it's a "must" for the Blitz bits ?
Use whatever brand you'd like but the 1/4" screws require a 3/16" bit and the 19/64" screws require a 1/4" bit.
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Old 07-18-2017, 06:22 PM   #6
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Re: GRK - Caliburn XL Screw - Into Concrete -- Bits ?


Quote:
Originally Posted by GregB View Post
No reason to use GRK drills. Seems strange that GRK makes great screws but not as good drills or driver bits.

We have standardized on Hawera Drills, GRK Fasteners, driven by Wiha Terminator Bits.
Their bits are the worst. Screws never strip..but those damn bits...
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Old 07-20-2017, 06:30 PM   #7
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Re: GRK - Caliburn XL Screw - Into Concrete -- Bits ?


It still amazes me how many of you complain about the driver bits. We NEVER strip them, we lose them all the time, but never have I seen a broken or stripped one. And we go through 10's of thousands of GRK screws a year.

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