Ryobi 1 Litre PET multi material extrusion adapter

This was built to attempt at the world record for longest potato fry.  It is a Ryobi silicon gun extruder adapted for a straight edged 1 litre PET bottle.

Whilst it was printing,  its smaller 600ml brother  smashed record with much thicker fry.  

Screw on multi nozzles for all sorts of crazy extrusions.   

In addition to crazy length potato fries, try impossible length bread sticks, lattice work pie toppings….no end for creative madness.

This print maximises complete bed space of Prusa MK3S and have to disable skirt to allow to print two halves together…(no need if print one by one).  

Whilst extruding potato to entertain kids was primary goal you can extrude anything through this..dough, clay, cement, play dough etc etc

This design is work progress and some improvements needed (mainly beefing up front end).  Posting now for the Prusa comp.  Other ideas Could make bottle holder 20mm longer if print on angle one by one to fully maximise full length of PET bottle.  Plus a food saver as per previous designs.

Only two screws hold the black silicon tube holder to the the main mechanism and one screw holds the pusher to the end of rod.  Remove these two screws, remove the outer sleeve, rotate left 30 deg (J slot) and pull the silicon tube holder out. (see photos).   This print slots right in.  Does not rotate but uses the J slot space to add strength to the 3D print.

dang! posted wrong YT video!!! am I disqualified?

Updated design with beefed up front end to follow soon