No Disassembly Ultimaker Bowden Clamp

TL;DR:

A removable bowden clamp for the Ultimaker 1's printing head.

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This is a by-product of a detachable direct extruder for weak filaments.

Features:

- provides additional hold on the printing head's tube
- quick and non-destructive removal of bowden for "cold pulls"
- (almost) no disassembly required
- tube length cutting help tool included
- it just works :-P