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08-09-2014, 04:51 PM #1
Improved End Stop Switch Brackets
When I first built the i3v, the thing that annoyed me the most was the end stop switch brackets. The geometry of the Y stop seemed strange to me, with the bolt hitting the hinge side of the switch. I couldn't get the X end stop far enough to the right to use all of the bed and I never could get the Z switch to trigger, no matter how much I trimmed the wooden mount.
So, I designed a set of stop switch mounting brackets that solve these problems. The Y switch is reoriented so the ball end of the switch hits the screw. The X stop is turned vertically with a notch in the bracket to fit around the wheel bolt and the bracket has a place to zip-tie the wires. The Z switch is relocated around the side of the extrusion so it lines up with the X idler.
Downloadable files are here: http://www.thingiverse.com/thing:321810
2014-05-05_20.20.50_preview_featured.jpg2014-05-05_20.45.35_preview_featured.jpg2014-05-05_20.45.54_preview_featured.jpg2014-06-07_20.02.13_preview_featured.jpg
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08-09-2014, 09:15 PM #2
- Join Date
- Jul 2014
- Location
- Eastern Colorado
- Posts
- 536
I have downloaded and printed out your X and Y brackets, but I keep having trouble mounting them. It seems I cannot get the screw tight enough to keep the bracket from moving, even after REALLY torquing down on the screw. I think I actually crushed one Y bracket by tightening the screw too much, but it still was loose on the extrusion. I got the X to stay put somehow, but the Y won't cooperate. Any suggestions?
As for mods I've made, I haven't designed any myself, but I've just added this http://www.thingiverse.com/thing:285504 to my i3v, along with the requisite firmware changes. I've also added lights to my printer, both at the top of the frame and behind the hotend.
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08-09-2014, 09:39 PM #3
Your screws may be bottoming out in the V-rail. I noticed that possibility during my i3v build. Look where you've tried to tighten something to the rail. If you see a circle being cut into the bottom of the channel where the nut plate rides, that's what is happening. If so, add a washer under the screw head or file the screw shorter.
Last edited by printbus; 08-10-2014 at 08:00 AM. Reason: clarity
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08-23-2014, 03:30 PM #4
- Join Date
- Jul 2014
- Location
- Eastern Colorado
- Posts
- 536
I think I may have figured out the problem with this, though I haven't tested it yet. I installed the T nuts as demonstrated in the MakerFarm assembly videos, with the raised threaded part up. I noticed that this threaded part was coming in contact with Clough42's brackets, keeping them loose on the extrusion even though the screws were impossibly tight. I think if I flip the T nuts over, it may work as intended.
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08-23-2014, 05:36 PM #5
The tee nuts only work one way. raised part must be away from the screw head.
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08-23-2014, 08:51 PM #6
- Join Date
- Jul 2014
- Location
- Eastern Colorado
- Posts
- 536
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