so how dos everybody get the wing parallel to the fuse anything debond epoxy
When I'm fitting the wing and tail to the fus I first make sure the fus is perfectly vertical. I do this by placing it between a couple of pieces of 4" diameter aluminum bar stock I just happen to have laying around -- but you could use anything heavy that has sides which are square to their base.
Don't just assume the fus is square however, use a set-square to check.
Then I do a dry-run with the tail and wing -- putting them in position and measuring the distance from the tips to the surface of the *flat* building table or concrete floor I'm using.
Almost inevitably one end will be lower than the other so I cut some 3/8" balsa to length and prop it under the low-side until both ends are an equal height from the table/floor.
I then measure from the rear of each wing-tip to the rear-most tip of the fus so as to make sure the wing is square and not skewed (also check that it's properly centered length-wise at this point). Once I'm happy with this I then use a marker to draw a line on the wing along the side of the fus.
Do the same thing with the horizontal stab.
I'm assuming you've already covered everything so now you can cut just inside the lines you've marked and remove the film from this center-section in preparation for gluing.
You can then add your glue and reposition the wing and tail (do one at a time so you've got more time to reposition everything before the glue kicks).
Make sure you recheck the tip-to-table and tip-to-tail measurements after you've repositioned everything and before the glue goes off.
I prefer to use epoxy but others may opt to position everything first then wick in some CA -- whatever spins your wheels I guess.
Remember, getting it right the first time isn't hard if you work methodically and take it one step at a time.
Don't just assume the fus is square however, use a set-square to check.
Then I do a dry-run with the tail and wing -- putting them in position and measuring the distance from the tips to the surface of the *flat* building table or concrete floor I'm using.
Almost inevitably one end will be lower than the other so I cut some 3/8" balsa to length and prop it under the low-side until both ends are an equal height from the table/floor.
I then measure from the rear of each wing-tip to the rear-most tip of the fus so as to make sure the wing is square and not skewed (also check that it's properly centered length-wise at this point). Once I'm happy with this I then use a marker to draw a line on the wing along the side of the fus.
Do the same thing with the horizontal stab.
I'm assuming you've already covered everything so now you can cut just inside the lines you've marked and remove the film from this center-section in preparation for gluing.
You can then add your glue and reposition the wing and tail (do one at a time so you've got more time to reposition everything before the glue kicks).
Make sure you recheck the tip-to-table and tip-to-tail measurements after you've repositioned everything and before the glue goes off.
I prefer to use epoxy but others may opt to position everything first then wick in some CA -- whatever spins your wheels I guess.
Remember, getting it right the first time isn't hard if you work methodically and take it one step at a time.
