MacPara
Well Known Member
I'm currently finishing the wingtip of the second wing and was looking ahead to the flaperon section 18 to see what's coming up. What I am confused about at this time - and I seem to be alone with this confusion as I haven't found anybody else talking about this - is how to correctly "match-drill" the stainless steel tube used as a counterweight through the nose ribs A-1204-L/R as requested in step 1 (I believe) on page 18-03.
Match-drilling until now meant to use an existing hole which was easy to access and drill through that hole into something else that didn't have a hole.
In this case though it appears that although there is a hole in the A-1204 nose ribs that you should match it is not easy to be accessed by a drill at all - at least not without canting the drill.
I read in blogs that most used a drill press to drill a straight hole which is fine and obvious but how did you make sure your hole was in the right place??
Did you just mark it using the hole in the A-1204's??? I'm really unsure about the best way of dealing with this issue and that heavy long stainless steel tube looks like it would be expensive to order after messing one up in the learning process.... so I thought I'd rather ask.
Match-drilling until now meant to use an existing hole which was easy to access and drill through that hole into something else that didn't have a hole.
In this case though it appears that although there is a hole in the A-1204 nose ribs that you should match it is not easy to be accessed by a drill at all - at least not without canting the drill.
I read in blogs that most used a drill press to drill a straight hole which is fine and obvious but how did you make sure your hole was in the right place??
Did you just mark it using the hole in the A-1204's??? I'm really unsure about the best way of dealing with this issue and that heavy long stainless steel tube looks like it would be expensive to order after messing one up in the learning process.... so I thought I'd rather ask.