Quote Originally Posted by curious aardvark View Post
flashprint is great for cutting things into chunks.

I'd keep it simple, run 2mm cylindrical channels through the whole bridge. Then, no matter where you cut it, you'll have holes that line up that you can glue 1.75mm filament into as a joining guide.

Thanks to both of you for the advice. I have been using Simplify 3D, but the cutting tool in Flashprint is terrific. As the bridge deck is curved it will be tricky to get cylindrical channels through it evenly, but I'll give it a shot.