Thanks a lot for posting this. I just purchased 2 racks and was advised to check your post. Bought a 6 pack of the Staedtlers and have started getting to work.
Also - I didn’t think of doing them as a barrel, started individually on the first couple, then thought I should double check your post… think you saved me a good hour at least.
Before left, after right:
View attachment 1109760
Eraser is super soft, surprised it comes off yellowy:
View attachment 1109761
3 down, 197 to go…
View attachment 1109762
I’m also getting a rack of
HSI $25 secondary’s tomorrow - will check if they have a similar issue and if this technique works.
Cheers - Kam