Saturday, October 17, 2009

Engine mounting fixed

Dad finished the inserts for the engine; for where the threads were stripped. I glued them in, with thread-lock, a couple of days ago. We still need a new drive shaft.

wrinkles, but not so many

The October 12th blade has started to show some small wrinkles, but not so bad as before.
Maybe the foam was not well enough mixed? I mix it with a pencil in a cup for 20 seconds.
Maybe there was not enough foam, therefore not enough pressure.

I will mix more foam next time and release from mould after 3 days.
I want to see the weight lift a little, so I know there was enough pressure.

Tuesday, October 13, 2009

Chiselling

I have made a start at cutting the profiles in my wooden propeller plug.

paper printouts


I have printed out the paper printouts to help me cut the wooden plug for the left-handed prop

Monday, October 12, 2009

Two weeks


I removed the latest propeller blade from the moulds, after two weeks curing.
I trimmed the foam flashing off it. There is no noticeable smell from it. I hope this one doesn't get wrinkles like the last one.

Tuesday, October 6, 2009

Left handed prop


I have built the old "DanCAM" software I wrote to design my prop blade.
I was hoping to cut a plug for the other blade direction, the left-handed one. The piece of wood I bought has twisted a bit, after being left against the wall, so I will need to measure the twist to take it into account before printing the paper profiles for it. It would be nice to rewrite the propeller part of the software as part of my HeeksArt software http://code.google.com/p/heeksart/

Monday, September 28, 2009

Another blade

I've got another blade in the mould, with foam in. I'll leave it for two weeks before touching it again. That will be September 12th.