jitsbuild-extruder
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jitsbuild-extruder [2012/12/29 22:39] jit |
jitsbuild-extruder [2014/01/25 17:44] (current) jit |
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| [[jitsbuild-platform|Prev: Platform]] < [[jitsbuild| Up to Jitsbuild]] > [[jitsbuild-wires|Next: Wires]] | [[jitsbuild-platform|Prev: Platform]] < [[jitsbuild| Up to Jitsbuild]] > [[jitsbuild-wires|Next: Wires]] | ||
| + | //This page pertains to the Bukobot v1. Some portions may be useful to v2 owners. For more information, see [[jitsbuild|here]].// | ||
| Get out the extruder kit ([[bukobot-parts-list#bukostruder|bag 18]]): | Get out the extruder kit ([[bukobot-parts-list#bukostruder|bag 18]]): | ||
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| {{wiki:jitsbuild:extruder-from-front.png?800}} | {{wiki:jitsbuild:extruder-from-front.png?800}} | ||
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| + | Note: in the picture above the nut on the tensioning screw has not been tightened as much as it should be. The long M4 tensioning screw is not fully-threaded and the nut should be tightened down all the way to the un-threaded part of the screw. Even so, some filaments are particularly stiff and hard to extrude. If you are trying to use one of these hard types of filament and you can hear the filament periodically slipping (and you have already tried cleaning out the filament drive teeth) then consider adding a few more washers to increase the amount of compression on the spring. | ||
| Now it's time for the initial leveling of the platform. We will do this again, more precisely, later. | Now it's time for the initial leveling of the platform. We will do this again, more precisely, later. | ||
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| Once you get to the front right corner, slowly move the hot end to the left. If it gets too close to the platform, lower the left front corner of the platform by turning that wheel the same way as before. Once you get to the left front corner, it should be safe to move the hot end to any part of the platform. Check that, slowly. If you have any hardware protruding from the top of the platform, such as the electrical connections on the heated platform, don't hit them with the hot end. | Once you get to the front right corner, slowly move the hot end to the left. If it gets too close to the platform, lower the left front corner of the platform by turning that wheel the same way as before. Once you get to the left front corner, it should be safe to move the hot end to any part of the platform. Check that, slowly. If you have any hardware protruding from the top of the platform, such as the electrical connections on the heated platform, don't hit them with the hot end. | ||
| - | If you have a second extruder, do that one too. Carefully check platform clearance, as the second extruder might hang farther down than the first. If they hang at different heights, you may have to shim with thin washers. But first, check to make sure the extruders aren't hung up somewhere on their mounts. Also check that an imaginary line drawn between the two extruder nozzles is exactly parallel with the horizontal steel rods; if not, adjust the position of one or both extruders until it is, or as close as you can get it. | + | If you have a second extruder, do that one too. Carefully check platform clearance, as the second extruder might hang farther down than the first. If they hang at different heights, you may have to shim with thin washers. But first, check to make sure the extruders aren't hung up somewhere on their mounts. Also check that an imaginary line drawn between the two extruder nozzles is exactly parallel with the horizontal steel rods; if not, adjust the position of one or both extruders until it is, or as close as you can get it. A good starting point is to try aligning both hot-ends to the edge of the heated bed glass which you in turn align with the front or back edge of the heated bed. |
| On the dual-extruder machines, there is an offset between the two hot-ends that is roughly 75 mm in the X direction, zero (or nearly zero) in the Y direction, and (must be!) exactly zero in the Z direction. You have to get the Z offset as close to zero as you can. Then you measure the X and Y offsets and input those numbers into the software before you print (you do this just once at first, and then again any time you loosen your extruder mounts). To measure those offsets, see [[http://forum.bukobot.com/index.php?topic=33.msg127#msg127|here]]. Don't worry about making those measurements right now. | On the dual-extruder machines, there is an offset between the two hot-ends that is roughly 75 mm in the X direction, zero (or nearly zero) in the Y direction, and (must be!) exactly zero in the Z direction. You have to get the Z offset as close to zero as you can. Then you measure the X and Y offsets and input those numbers into the software before you print (you do this just once at first, and then again any time you loosen your extruder mounts). To measure those offsets, see [[http://forum.bukobot.com/index.php?topic=33.msg127#msg127|here]]. Don't worry about making those measurements right now. | ||
jitsbuild-extruder.1356842368.txt.gz · Last modified: 2012/12/29 22:39 by jit
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