This mess (Kuro + M2 washer + bent up paper clip):
builds the top two of these coils:
+ Fully adjustable
: Hit paper clip with a hammer until it's the right thickness for desired spacing
+ Cheap
+ Makes evenly spaced coils slightly better than stretching and recompressing (see 3rd coil in pic for comparison)
- Bit fiddly to use compared with normal Kuro operation
builds the top two of these coils:
+ Fully adjustable

+ Cheap
+ Makes evenly spaced coils slightly better than stretching and recompressing (see 3rd coil in pic for comparison)
- Bit fiddly to use compared with normal Kuro operation