Chapter 25 – Canard finish 2.0

With my Eureka CNC (or whatever the new company name is) canard templates in hand, it is now time to dial in the canard to get it as close to Roncz specs as possible. That being said, I’ll note for the record that this is a bit more challenging on my canard versus all my Long-EZ building compadres who ordered their wing cores from Eureka CNC.

Since Stephen James was unavailable when I ordered my wing cores, and I was shortly heading off to Germany, I had to order mine from Feather Light.  And while they did a good job, my cores —still hot wire cut— certainly were not as bang-on dimension-wise as if I had bought the CNC cores.

I note this because dimension “challenges” have reared their ugly head in a few spots on my canard cores (and probably wing too).  Primarily the top trailing edge and the bottom aft curve, which is not as pronounced as it should be… as highlighted when I use the bottom template.

Thus it is that I’ve had to add a decent bit of micro to fill in this bottom aft corner of the canard, with some touch ups in a few other areas as well.

While the first round of micro cured on the bottom of the canard, I got busy making up a sanding block based on the Eureka CNC template, with 0.045″ extra added to allow for the thickness of the sandpaper.

Here’s the top canard sanding block after I finished it.

Here are a couple more shots of the canard top surface sanding block.

I then spent a good hour sanding both top sides of the top canard with 36 grit sandpaper loaded inside the sanding block.

I then swapped the sandpaper out for 120 grit and did another good half hour of sanding.

I then flipped the canard over and did the same thing on the bottom, with the canard bottom sanding block that I cut and assembled.  I then re-micro’d the bottom of the canard since that bottom aft corner needed a little bit more thickness to it.

With some of the leftover micro from the canard, I quickly taped up the left aft wheel pant and applied some micro to it aft of the seam with the forward wheel pant… since clearly the aft wheel pant is a bit low in comparison.

Yes… many machinations going on with this finishing, but still pressing forward!

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