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Dans RV8
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Date:  6-22-2019
Number of Hours:  1.00
Manual Reference:  
Brief Description:  DAU Cable Harness Firewall Penetration

We installed a 1" firewall penetration. What should have been a simple job took too long.

I needed a 1" hole. I have just the tool for that - a screw tension dia in 1". I drilled a 3/4" pilot hole for the mechanism. I inserted the tool and die and started rachetting it down. Somehow the punch started to walk, making an elongated hole. More aggravating was that the tool got stuck 90% of the way through the cut. I had to pry it out, makeing a further mess of the hole.

Reworking the hole to get something that was without stress risers took a whil.

Finally we drilled the four mounting holes, applied fire seal to both surfaces and fastened it down.

Ready to pull DAU wires.
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