MermanOliver
03-04-2016, 03:05 PM
Hi all!
Today was tinker time, and so I did a small test on lexan and its resistance to scratches. The result was quite interesting:
Unscratched lexan is virtually unbreakable
A scratch (or in this case a cut) makes it break along that scratch easily
https://www.youtube.com/watch?v=tt7bcbg7VZ0
I guess that may be why my homemade fin broke last year. For glueing the footpockets on I roughed the surface with 80-120 grit sandpaper. The scratches might have introduced a weak spot, and the fin slap might have been the one shock too much.
Today was tinker time, and so I did a small test on lexan and its resistance to scratches. The result was quite interesting:
Unscratched lexan is virtually unbreakable
A scratch (or in this case a cut) makes it break along that scratch easily
https://www.youtube.com/watch?v=tt7bcbg7VZ0
I guess that may be why my homemade fin broke last year. For glueing the footpockets on I roughed the surface with 80-120 grit sandpaper. The scratches might have introduced a weak spot, and the fin slap might have been the one shock too much.