How do I stiffen an old canvas duffel bag?




can i paint a heavy canvas bag with resin to make it stand up. Will resin discolour the canvas?have old army bag that i would like to keep any ideas would be welcome. thanks N B from NZ
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I would to use liquid starch instead of resin.
What about starch?
https://www.youtube.com/watch?v=bJXazzTp4XI
Wash the bag on the machine and let it sit dry it should stiffen up
Here's how to make starch this will stiffen without affecting the color. https://hearthookhome.com/how-to-make-super-heavy-starch-craft/