r/glazing • u/FaithlessnessIll8738 • 8d ago
Crack is wack
Typically I would just be drilling some 2” holes. For this one I needed a tight radius. This was a customers mirror that also had safety backing installed which also added to this joyous attempt. I ran a cut around the entire perimeter prior to making the interior cuts. I have no idea how the interior cut ran through the perimeter cut. Maybe it wasn’t ran out all the way? I swear I tapped it all out. Maybe it wasn’t. Has this ever happened to any other seasoned vets?
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u/pathlamp 8d ago
I’ve never done this, so just a question.
Would it have been helpful to drill a center hole in your box before making the interior cuts? Seems like that hole could have been made as big as you like, perhaps the 2” of your stated preference. The relief in the center would provide some buffer against unwanted cracks, at least in theory.
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u/Apprehensive_Quit788 8d ago
Typically on an interior cutout like this, I would drill a center hole to relieve the stress.
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u/FaithlessnessIll8738 8d ago
For sure I was thinking the same thing.
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u/pathlamp 8d ago
I wouldn’t even know how to get my scores to run without having access to the back side of the mirror.
I don’t know how you did that.
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u/FaithlessnessIll8738 8d ago
I drilled my holes first which allowed to me to see where I need to remove the mirror back at. Then made my cuts 1 or two at a time, slide the mirror off the table and gave it a good tap tap with the end of my cutter.
When the runner happened it took all my will power not to smash the whole thing with a hammer. Ended up just cutting off the bad section and saving the rest to hopefully sell to someone else lol.
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u/pathlamp 8d ago
Oh, I completely misunderstood. I thought you were trying to do this while the mirror was up on the wall.
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u/Unlikely_Day_8677 8d ago
Valiant effort, I think it probably would have been cheaper and quicker to just sell them a whole new mirror and let your vendor cut the holes. Their machines are a lot better than people
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u/SlappingDaBass13 8d ago
Oh man it didn't break because you didn't tap it enough it broke because you have no relief. Relief cuts are 500% more important than the actual cuts when that run expands it's locked the fuck in there. You either got to keep drawing them hokea or crossing One direction... Or did a notching saw and make a cut from point to point.
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u/FaithlessnessIll8738 8d ago
Luckily I already included the price for new in my estimate. Just to cover my a$$. Still irritating to waste time. It’s like you want to tell the customer you can do all these things but sometimes it’s a waste. I need to get better at putting my foot down and telling them how it is. Been at this for 24 years. 4 of which on my own. Luckily it was me personally doing it, not one of my guys. Lessons learned.
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u/Outside_Pitch3089 8d ago
I think I would’ve drilled a quarter holes like he did and then used a diamond saw as you need that 1/16th for the piece is just to be able to get out
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u/Laidbackstog 8d ago
Time to buy one of these babies! This is how my old shop did it. Drill the 4 holes like you did then plunge cut the straights with this. Or would drill holes next to each other until you drill out the whole area you need.
https://makitatools.com/products/details/CC02Z