Fishmouth tubing 3hrs

More practice

Fishmouth practice

Fishmouth tubing....take 3

I tryed a combination bench grinder and dremel tool tonight. The two work very well together. First I mark the angle of the joint and the center line.  Then grind most of the material off. This naturally starts to round a groove in the tubing.

Then i used the dremel with a 5/8" bit which wants to center in the groove, as I round the groove to fit the contour of the longerons which is mostly 5/8". A little test fitting results in a fairly tight joint with the appropriate angles. Much like sanding wood joints, it takes a little practice. I feel like I have a good system in place now.

90 degree right angles proved to be slightly more challenging for me, which I was not expecting.

Engine 2hrs

Clean..... err ummm polished?

Fuselage jig 1hr

Screwed in all the blocks in the corresponding location.

Engine 1hr

Continue  cleaning

Engine 3hrs

Got a new brush attachment and continued cleaning. Also stopped in to checkout welding equipment.

Fuselage jig. 5hrs

Made relief cuts in the jig blocks for tack welding.

Fuselage jig 2hrs

Cut the rest of the blocks.
Hung up some new shop lights above the long bench.

Fuselage jig 2hrs

Started cutting mdf for a fuse jig.

Tubing station

Trying out a little station for fishmouthing tubing. Put down angles up to 90 degress and made a holding tray to elevate the tubing to the correct height. I am hoping this allows better control and more precise joints then would be able with just an angle grinder. Time will tell if this will work.

Tubing station

Spring cleaning