General purpose extruder #4

by Wired1, published

General purpose extruder #4 by Wired1 Mar 9, 2013


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One-piece body with integrated filament tensioner based on Gregs's Wade original.
Redrawn in HeeksCad to make it easier to integrate with my other projects. This is easier to print and assemble than my earlier general purpose extruder and should be easier to use as well.

Designed for use with a J-head hot end on an aluminium plate . Standard mounting hole spacing should work with any existing mount for Wade-type extruders.

Use this is preferece to the earlier http://www.thingiverse.com/thing:50659


Print it out 2-3 shells and about 40% fill.
Use with my 45/11 gear set or any other should work also.

You need:
3 x 608 bearings
1 x 8mm rod 20mm long (or M8 rod works as well).
2 x M4 mounting bolts and nuts.
1 x hobbed bolt, washers and nuts.

Clear out all the idler tensioner bolts and the filament hole with a 3.5mm drill.
Clear out the mounting holes with a 4mm drill.
Fit the idler 608 bearing without the 20mm axle rod.
Gently prise the idler ope enough to slip the idler axle through the idler 608 bearing (the idler printed hinge is very flexible so shouldn't break).
Fit the other two 608 bearings and hobbed bolt.
Complete the extruder with your stepper motors and chosen gear set.

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Hello Wired1
I have just received a MendelMax and after googling I believe that it is one you made!
(This one - http://forums.reprap.org/read.php?41,150873,page=2)
I am looking at changing to 1.75mm filament - do you have any recommendations for this change? (Looking at changing as 3mm seems to be getting harder to find and some filaments I can only get at 1.75mm)


Hi, Is anyone able to print one of these extruder heads as I am happy to pay them to do so? December 7 2013 .

Hi! Can you post Inventor or Solidworks files for this extruder? Thanks!

Sorry but I can't afford Solidworks :) this was drawn in HeeksCad. You should be able to slice it from the STL file with any of the common slicing programs.

Should probably mention I printed this in PLA which is more flexible that ABS.

Now, for people to add the tilt idler, etc. =P

Yeah full circle :) Even with the tilt idlers I still can't be bothered opening up the whole thing anyway, the filament just slips in so no need.