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Thread: how do you C notch your tubing

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Old 11-14-2006, 09:37 PM   #1
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Default how do you C notch your tubing

I'm trying to build a tube scaler I was wondering what everyone uses to C notch their tubing. I am planning on using 3/16 brake line and brazing. And what do you use to clean up the slag from brazing?
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Old 11-14-2006, 09:52 PM   #2
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i was gonna try one out of 1/4", i bought some 1/4 bits for my dremel thinking i could easily notch em, but nope. i think a how to i read though notching with the 3/16 wasnt as important cause when you braze it fills it in, that you could just kinda v-notch it. with scale tubers on the rise it would be nice if they came out with some scale size tubing tools....
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Old 11-15-2006, 12:55 AM   #3
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Use the corner of a grinding wheel.
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Old 11-15-2006, 01:10 AM   #4
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i use a 3/32 drill bit and drill out the center or what size bit you need,depending on what size tubing,if the fishmouth is too big just smash it with a hammer or grind away what you dont need.works pretty good.
i recently was reminded about this technique from o5tacoma. commonly used for making tube chassis' for drag racing.if you dont have a tube notcher.
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Old 11-15-2006, 01:58 AM   #5
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Quote:
Originally Posted by run2jeepn
Use the corner of a grinding wheel.
So you figured that out too? It works great.
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Old 11-15-2006, 03:11 AM   #6
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Mill, Dremel with the tiny sanding drum, rat tail file.
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Old 11-15-2006, 03:50 AM   #7
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If you see here there is many ways to do it. Also if you use 3/16 solid rod and MIG weld there is no need to notch anything. Since both metals are melted at the joint.
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Old 11-15-2006, 07:01 AM   #8
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It's best to make a decent fishmount so you get a good fit for brazing.

I've actually found the fastest way to fishmouth is with an abrasive 7" steel blade I have in a table saw. After that I hit it a bit with a rat tail round file.

If you don't cook the flux too much it comes off pretty easy with some Scotchbrite, or you may have to sand a bit if it's gotten too hot. If you wait about 30-60 secs for the joint to cool a little and then douse it in water, a fair amount of time a lot of it will wash off.

Jay
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