Bowden Clamp for Ultimaker (Heater End)
by owen, published
Sick of your Bowden tube popping out 10 minutes before the end of a 6 hour print? If you cut any more off the end it won't reach the front corner any more? This will hold it in place for you. All printable. Mounts with your existing bolts. Clearances and Fan side bolt mount height adjustable. Quick and easy to release Bowden tube. Thanks to http://www.thingiverse.com/thing:9095 for the great screw threads and knurled finish.
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Warning. Don't tighten this too tight or the plastic part can break!!!
UPDATE Jan 31 2012. Added stl files of bigger clamp I've added 5mm length to Riser Thread Height and 10mm to Cap Height, this makes the Cap take up a lot more thread before tightening the cable which makes it much stronger. the files end with number 2. This is the one I use myself.
Make adjustments in Openscad for Clearances and Fan side bolt mount height. Fan side bolt mount height is set for 2mm so that it's bolt can still fit a nut on for the fan but higher is much better if you can still manage to mount your fan some way. Print each part individually strong with fine layers. Clean up and apply a very small amount of grease on outside of tightening cone and on the thread of riser. Run the nut up and down riser to have it working smoothly first. Adjust nut diameter and reprint if necessary. Once you have a good fit you may want to print a spare. Trial fitting and tightening on another tube first. Wait till your Bowden Tube pops out.(Start printing something important!) Undo 4 mounting screws and clean top of Peek block out if necessary. Remove the closest screw in the top heater board assembly mount and rotate that assembly out of the way. Slide nut and Tightening cone onto Bowden tube in the right direction and order. Check riser will fit on Bowden tube and then Mount it on the top and do up 4 mounting bolts half way. Push your Bowden tube through and into the top of the Peek block. Tighten all three bolts not nearest the tube all the way up. But not too far like I did (See pic). Tighten last bolt within .25 to .5 mm Push tightening cone by hand as far as you can down into riser. Push nut down and carefully tighten up with thumb and one finger. Doesn't need to go real tight as it grips fairly well. Tighten the last bolt up all the way. Put your old clip back on as well if you left it in place. Readjust your platform height. Reprint a full version of that important thing.