Couples a 5mm motor shaft to an 8mm threaded rod, ensuring they are coaxial, but allowing some angular movement if the rod is not straight. See hydraraptor.blogspot.com/2011/06/yet-another-prusa-z-coupling.html.

A probe that can make Z measurements and then retract itself out of the way. It was designed for HydraRaptor but can probably be adapted for other wooden machines like Makerbot.

See hydraraptor.blogspot.com/2011/04/auto-z-probe.html

An object with holes that should come out the correct size on all printers. See hydraraptor.blogspot.com/2011/02/polyholes.html.

An object to attach a washing line to an inside wall.

An alternative to Christmas Crackers, see hydraraptor.blogspot.com/2010/12/crackers.html.

The star is from thingiverse.com/thing:5014 and the tree from thingiverse.com/thing:5002.

Send the filament to pipe.

Originally uploaded by GuoGe, but then deleted. However, once something is published to the web it cannot be deleted.

I have uploaded this by request. It is simply the original pulleys and rims with the pulleys built on top of the lower rim to save build area.

MBC has also uploaded a fully integrated version thingiverse.com/thing:1936 but that requires a 45 degree overhang, which is tricky to print.

A stronger version of the idler bracket as mine cracked after prolonged use. See hydraraptor.blogspot.com/2010/07/broken-bracket-breakdown.html

This is a modified version of Wade's gear that has the advantage that you only need to file a small indentation on the motor shaft rather than two precision flats.

A simplified version of the Mendel y-chassis suitable for making with a saw and a drill press.

Mendel pulleys that use an M3 grub screw and a captive nut. The advantage over the original is that you only need one small flat on the motor shaft, rather than two full length ones that have to be filed to exactly the right size.

Can be used for all three axes.

A wall mounted doorstop. Functional, but not aesthetically acceptable to the wife, so probably only suitable for an aesthetically challenged bachelor!

See hydraraptor.blogspot.com/2009/12/quality-control.html

A device for picking out of reach fruit, e.g. pears. A pair of secateurs is clamped to the end of a pipe and operated remotely by a string threaded through an eyelet by pulling on a handle. See hydraraptor.blogspot.com/2009/09/pear-shaped.html.

An alternative Z-axis for the RepRap Darwin using four Airpax A83709-M4 motors available cheaply on the surplus market.

A pair of right angle brackets. The holes are designed to take M5 bolts and the spacing from the edge is just right to trap an M5 nut.

A regular polyhedron with twelve pentagonal faces. This one is about about 25mm high and is hollow. See hydraraptor.blogspot.com/2008/11/dodecahedron.html.

An alternative design for the RepRap Darwin Z endstop. It allows the machine to home the z-axis away from the workpiece, so that homing is always a safe operation, regardless of what state the machine is in. More details in my blog: hydraraptor.blogspot.com/2008/08/alternative-z-endstop.html

I don't know if this is international but in the UK modern homes have gas and electricity meters on the outside of the house that need a triangular key to be accessed. Easy to lose, so here is one you can make in about 25 minutes.

Fits on the end of a pole to support the overladen branches of a fruit tree. More details in my blog: hydraraptor.blogspot.com/2008/08/bearing-fruit.html

A hook with a bearing to suspend a basket of plastic to feed a RepRap machine. Full details in my blog: hydraraptor.blogspot.com/2008/11/sky-hook.html

A small screw top pot originally designed to hold the lens adapter of a Fuji FinePix E900 camera. More details in my blog: hydraraptor.blogspot.com/2008/09/screw-top-pot.html

Slips over an 80mm lathe chuck to make it easier to turn by hand when using the lathe to tap a thread. More details in my blog hydraraptor.blogspot.com/2008/11/new-toy.html. See the discussion about unsupported lintels.

A small container in the shape of a heart.

A simple plastic tool for scraping swarf out of t-slots in a milling machine bed or a lathe cross slide. It is for slots that are 16mm wide and 6mm high.