/diy/ - Do It Yourself

>>787820
>>as a 3d printout is not really reliable
You aren't using a Z-corp machine are you? If yes, then you should be very concerned about structural stability, because z-corp prints are about as strong as chocolate.

If you are using an FDM machine and you are worried about the parts being strong enough set infill to 100%, it will use a lot of filament, but you will end up with pretty strong parts.

Though honestly, how much force are your parts going to experience in a fish robot? Now if you are worried about surface finish and not structural integrity there's solvent polish:
http://blog.reprap.org/2013/02/vapor-treating-abs-rp-parts.html

You can also just sand it you know?

Oh and don't use PLA, it is prone to rotting when wet.

Video related, a dead fish swimming upstream.