Update: Back to production on this ratty bit of plastic. Had a heck of a time getting the last, and still a bit small, bearing carrier made yesterday, because the ejector motor was back hopping and I had to slow the feed rate way down and help the fiber from time to time, coming to the conclusion the the plug was above the nozzle. So I took it apart again this morning and found the bowden tube had backed out a little over an eight inch, leaving a huge plug of tube diameter plastic above the nozzle. So I warmed it up to about 220C and cleaned it out with q-tips.
Seeing a you tube video where a guy named Tim had printed a washer, cutting his bowden tube so its upper end inserted into the hot end, was sitting a few thou above the shark bites bottom, so when the shark bite was screwed it, that section of the tube was somewhat compressed against the tip, so I did a shade tree mechs version of his printed washer under the shark bite using a steel flat washer thats about the right size for a 2-56 screw, putting it between the bottom of the shark bite and the tubing, and inserting a piece of fiber to align its hole with the tubing as I tightened it about half a turn past contact, then molded the cut with flush cutters tube back to round, inserted it back into the shark bite. Checked it for pullout. Set it up to make an even bigger bearing cap but at the same temps I used yesterday to stop the heat from crawling up into the red sink. 194C extruder, 55C bed. Hotter only for the first layer. It laid a .022 thick priming track on the bed and the ejector motor is happy, cranked up the feed rate, doing that carrier at 200%, extruder motor is happy despite the lower than default temp. I think, if it prints the cap just as well, that 99% of my troubles with this BBLB printer are over. Until that tubing falls prey to the heat. :( Slim chance I might get the rest of the screws I need later today. And thats the news from Lake Woebegon. :) Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
