Bicycle Toolbag

thingiverse

This is my first try of a bag for my bicycle. I wanted to start with something easy and relatively small so I choose a bag for a spare tube and three small tyre irons to be mounted just underneath the saddle. The tube is for a 29''x2,25'' tyre and the bag is just big enough to carry that tube. It turned out to be not as easy as I first thought.To make it a soft bag it has to be printed in TPU. I choose 95A TPU. I also tried another A95 TPU from a different company which turned out to be significantly softer so that the whole bag would get a bit too soft for my liking. As I wanted the bag to weigh as little as possible I did not want to compensate for that by using thicker walls. The black 95A TPU from 3djake worked well for me.Also I found no way to glue TPU parts in a trusty manner. I do not want to loose the whole bag or its contents because some glued connection fails. So I had to learn to sew the lid and the two buttstraps to the main body of the bag using an awl. The photographs show that I'm still learning. Maybe you find other ways to do that. Please post your remixes to show me how you did it. TPU is a bit hard to be printed in a clean manner. My first idea was to print the whole thing in just one piece but my printer and I were not able to that. So I had to use the many parts approach.When sewing make sure to not do two stitches in a row between the same printing layers. I had the thread cut the layers twice when I did this. So I used some kind of criss cross approach when sewing in the direction of print on one of the parts. Look at the photos to see what I'm trying to say here.Among the parts files you'll also find two straps. I do not plan to actually use them because the fasteners seem too weak for my liking. But any other strap can be used.This is still work in progress as I will start to use the first bag on one of my bikes now. Some older version did not even get to this stage. So maybe this gets updated in the future.