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How Would You Do This ?

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Old 06-03-2009, 10:36 PM   #1
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How Would You Do This ?

I am looking for a way to drill holes in a commerical metal window frame that has mortor packed on the sides and top.
I need to fasten the glazing strips in the frame that will hold the Lexan windows . I am think of using a #12 Teck scerw as a dispasable to drill into tha metal/masonry transisson then using a Tapcon screw to hold the glazing strip.
Thanks for your help.
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Old 06-04-2009, 02:00 AM   #2
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Re: How Would You Do This ?

Stick to electrical.


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Old 06-04-2009, 04:04 AM   #3
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Re: How Would You Do This ?

buy a few extra steel bits, drill one hole until you first see dust, then you know how thick the steel is, then with a new bit drill as many holes as you need to but to a depth just shy of the thickness of the steel. then take your bit that you were using, and punch out the last bit of steel in each hole, you can use the original bit as well if the bit gets too tired, finish the holes with the appropriate drill bit for your tapcon, and your done. if a little steel is still in the hole, the masonry bit can remove it no problem.

I have done the self tapper thing, it does work, but it can drift a little, or if you push too hard, you could roll of the tapper, and damage the frame.
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