I've just started using the fantastic V-Spooler by Fryby Additive. As I use mostly eSun spools, I've made these spool spacers for the generic clamp and spindle. They're quick and dirty, but hold the spool nicely.
Thanks for making these. I wasn't sure how you actually used the combination of the two. Inevitably, I printed two of the larger spool adapters, both with the partial axel/barrel adapter. When I tried with the flat washer adapter, I couldn't get it to work. Maybe you're using the clamp component from the original v-spooler? I used the all the pieces that came with the generic clamp, which involved replacing a piece on the original v-spooler. Not doing a great job explaining myself, but in the end, was super happy to have these. Also, you should consider calling this a remix, as it would give you visibility and would add to the original project. I found these by chance after a google search.