2X Extruder Upgrade for Raffle Alu-Dual Cooling Block (Remix)

thingiverse

This is a major upgrade based on the phenomenal work of both rmcniff (http://www.thingiverse.com/thing:222667) and countspatula (http://www.thingiverse.com/thing:256754).\nLike countspatula I recently installed my Carl Raffle Cooling block and hot end upgrade (http://shop.raffle.ch/), and it required an offset of approximately 3mm to achieve proper alignment, necessitating a novel approach.\nInitially, adding spacers between stepper motor and cooling block seemed like the obvious solution to resolve the issue. However, this merely led to the stepper motor heating up even further, creating new problems when processing certain filaments through the hot end.\nThe primary motivation behind my upgrade was to position the steppers farther back against the cooling block in an attempt to mitigate overheating issues that were previously being experienced due to inadequate cooling.\nWhat can you expect to find within this package:\ \nAll files from countspatula's thing designed specifically for a hot end installation that sits flush with the top of the hot end, negating the need for nuts. Also included is an additional base piece (_no cutout.stl) featuring a recess for Carl's standard nuts that could potentially interfere with original bases when installed atop the hot end.\nProfound thanks to both authors of the original projects, rmcniff and countspatula !\nIt is time to start printing.\n \n Instructions\n( credits also go to rmcniff )\nRequired Hardware:\nThe bearing, shoulder bolt, and additional flat head cap screw required for assembly can be sourced from your Makerbot stock extruder. It will also necessitate a 0.375" x 1" or similar compression spring - the McMaster-Carr model #1986K5 is one viable option.http://www.mcmaster.com/#1986k5/\nA vital piece of information: Should you find that your extruder frequently clicks without actually releasing, then the problem most likely lies in too much tension exerted by the spring. To correct this situation simply replace it with a slightly weaker or shorter compression spring.\nPreparing the components:\nFirst, carefully print all of the required parts according to specified guidelines (i.e. base pieces, arm pieces, and cover pieces).\nThe best method involves simultaneously printing both left and right component pairings at once so as to improve detail on finer features\nTo add density and further aid in support creation while also facilitating easier printing experiences - for those individuals seeking lessened warping risk.\nInstallation steps: Once all components are complete simply begin re-assembling parts from previously acquired pieces as noted.\nIn situations requiring post-processing steps the guidelines that I'll now describe serve as a useful template in fine-tuning the finished model, such as adjusting holes for precision assembly and component fit.\nThe crucial information to be remembered regarding this base piece is as follows: both of the mounting hole sets will include smaller diameter counterparts but should never be widened further beyond their intended capacity.\nUsing my trusty 1/4" end mill tool allowed me easily remove one layer's depth at the arm piece while printing - although I would recommend applying drill bits or similar for an idealized output in achieving smooth integration within mechanical operations, and it was indeed worth every step of effort involved,\nor drilling larger diameter for smoother motion - simply swap to one matching close approximation from available collection\nAdditionally required for finishing work will be three standard sized drill tools specifically Number 21 drill (.161") being the preferred candidate for cutting small but deep holes found within parts\nAnd two further essential additions, those respectively number twenty seven and forty four (.144" or .086"). The bearing guide pegs of various filaments must all require fine-tipped adjustments. As you may suspect installation itself should indeed follow this precise step.\nStep-by-Step instructions: After having separated Makerbot extruder stepper motor remove any and remaining present drive components\nFirst locate your preferred makerbots gantry base assembly, securing new provided base components specifically with help shoulder bolts & appropriate m4 cap head screw \ngenerally make certain guide tube holes match proper configuration within both existing gantries prior removal (visual assistance recommended here too)\nin the instance improper alignment remains at that time feel no hesitation revisiting any and previous actions possibly undertaken - in hope one re-treatment of the parts, scaled properly may resolve aforementioned mismatch encountered originally upon printer start.\nComplete final preparations then reinstall steppers fully within drive components - also do reconnect both previously unplugged wires while finishing installation \nThe completion date: Simply take hold your newly refurbished print model today.