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  1. davidpettersson

    Drill sizes

    I hope not to find out. Though it would seem that pop rivets used in the Zenair/Zenith kits are more forgiving. That lesson was learnt in a former project. Sharp drill bits are the way to go. A big thank you to everyone who contributed with your knowledge and insights. I'm going for the fixed...
  2. davidpettersson

    Drill sizes

    No, the instructions don't call for that. I am building the rudder kit, so right now it is just drilling into doublers so that they can be riveted together.
  3. davidpettersson

    Drill sizes

    Hey everyone, I am based in eastern Canada, and I am surprisingly having a hard time finding #20, #30 and #40 drill bits over the counter. It would seem I need to special order from my local tool store. It is for my CH 750 project. My question is if I dare use the fractional drill sizes...
  4. davidpettersson

    Deburr using drill and 400 grit sandpaper?

    Thank you everyone!
  5. davidpettersson

    Deburr using drill and 400 grit sandpaper?

    Thanks. I was surprised at the amount of burring for some of the parts, but I think I will get the hang of it for future parts. Any ideas how to remove the scuffs there? I guess going up in grit could make the things a bit better.
  6. davidpettersson

    Deburr using drill and 400 grit sandpaper?

    I am just getting started, and I have some sheet metal of a CH 750 rudder kit that I was preparing. I found that many (if not almost all) holes in the sheet metal had burrs, so I gently used a large drill bit to get rid of the worst of it, and then used 400 grit sandpaper to level the remainder...
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