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Pietenpol-List: Cutting rib gussets
Posted: Tue Mar 05, 2002 7:42 am
by matronics
Original Posted By: Larry Neal
Hey all, Cutting rib gussets this week, and want to know how well a hole saw doeson the 1/16 mahogany ply? The round gussets sure are nice, but it seems thebig teeth on the 2" hole saw will rip up the edges pretty bad. I'll backup the bottom with a board to keep that side from tearing, but will thegusset tear on the top ?I really don't have a preference between round and rectangle/square gussets.I can cut the rectangles with a razor knife and paper cutter. I have a 2' x4' sheet, and want to get all the gussets out of it. That's enough isn'tit?Kent HallstenOklahoma City________________________________________________________________________________Date: Tue, 05 Mar 2002 19:53:49 -0600
RE: Pietenpol-List: Cutting rib gussets
Posted: Tue Mar 05, 2002 8:08 am
by matronics
Original Posted By: owner-pietenpol-list-server(at)matronics.com
I had access to a sheet metal shear, the kind you stomp on, and it work wellbut with a little deformation of the edges. I clamped a few pieces of woodto the table to act as guides to keep the corners square or angled to theproper degree, as the gusset warranted.chris bobka-----Original Message-----
Re: Pietenpol-List: Cutting rib gussets
Posted: Tue Mar 05, 2002 8:13 am
by matronics
Original Posted By: Fisherman Caye
RE: Pietenpol-List: Cutting rib gussets
Posted: Tue Mar 05, 2002 8:46 am
by matronics
Original Posted By: "Jack Phillips"
Thanks everyone! I'll be able to cut with all the suggestions here! I have access toa whole sheetmetal shop, with shears, (sometimes wonder why I'm notbuilding an aluminum can airplane) , jig saws, paper cutters, etc. Took stock of my rib material, and I think I messed up. I had 8' lengths ofwood capstrip. over 500', enough to get the ribs. But when I startedcutting rib capstrip braces, I should have cut about 34" of each strip,leaving 60+ inches for the top and bottom capstrip. Then use the 34" piecefor the smaller parts. N0 , not me. I cut and cut and cut and now all mysmall stuff is cut, and I have about 25 8' pieces left for the top andbottom strips. I need about 58 - 60 right? So time to get some more wood!Kent Hallsten________________________________________________________________________________
RE: Pietenpol-List: Control tube size
Posted: Tue Mar 05, 2002 8:47 am
by matronics
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Larry,AWG refers to American Wire Gage and is for copper wire sizes. The gages Ihave been using came from an old Engineering Materials Book which lists thefollowing table:THICKNESS OF STANDARD GAGES FOR CARBON STEEL SHEETS, INCHESGAGE THICKNESS7 0.17938 0.16449 0.149410 0.134511 0.119612 0.104613 0.089714 0.074715 0.067316 0.059817 0.053818 0.047819 0.041820 0.035921 0.032922 0.029923 0.026924 0.023925 0.020926 0.017927 0.016428 0.014929 0.013530 0.0120This seems to equate pretty well for tubing, too. Where the plans call for18 gage tubing, I used .049" wall. Where it calls for 20 Gage, I used .035"wall. For 16 gage sheet I used .063" material, and for 22 gage (controlhorns) I used .032" sheet. For 13 gage I used .090".Jack -----Original Message-----
Re: Pietenpol-List: Cutting rib gussets
Posted: Tue Mar 05, 2002 8:22 pm
by matronics
Original Posted By: Larry Neal
Pietenpol-List: Control tube size
Posted: Tue Mar 05, 2002 9:00 pm
by matronics
Original Posted By: Larry Neal