RE: Sig Smith Miniplane
T,
First I tape wax paper to the wing where it meets the saddle. If you don't do this, you will permanantly glue the wing to the fuse.
Then I mix my micro balloons with 30 minute epoxy. I use a lot of microballoons to the epoxy. You'll know the proper consistancy when you see it. It is similar to mixing drywall mud.
After this, I apply a good thick amount of it to the wing saddle and bolt the wing on. (Make sure you are using wax paper!) The epoxy/microballoon mix should squeeze out a bit.
I leave it set between 15-20 minutes.
Now, with a fresh straight edge razor blade, I cut the ballon mixture even withe the fuse- AFTER I pull the wing off of course. It will cut fairly easily without sticking to the knife.
Put the wing back on-WITH wax paper, and let it dry for 24hrs.
Pull the wing and paper off, shape and fill as needed, bolt the wing on and viola: PERFECT WING SADDLE!!!
Good luck.
Brian