Craftbot Z-Axis Offset Adapter

This adapter lowers the z-axis origin of your Craftbot printer before you e.g.
- add a magnetic mat or glass plate on top of your heat bed or
- modify your Craftbot hotend for standard Volcano heatblock and nozzle (I am working on it).

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Update 20 December 2021: Craftbot 3 hotend V2 modification for standard Volcano nozzle

Problem: The genuine Craftbot 3 V2 nozzles are available in only a few material variants, essentially brass and steel, and are somewhat expensive. They differ from genuine Volcano nozzles in that they have an M6 fine thread. The V2 heat block and heat break have an M6 fine thread as well. Standard Volcano nozzles have (normal, not fine) M6 threads. Therefore standard Volcano nozzles cannot be used in the genuine V2 hotend.

My general idea: Replace nozzle, heat block and heat break; keep everything else. The resulting hotend assembly will be some 8 mm longer than the genuine V2. Therefor