Electronics > Projects, Designs, and Technical Stuff
How to mount a rotating tray above a servo
Ed.Kloonk:
What about a counter weight attached to the other side of the tray?
Youkai:
Not really possible. The tray is going to be mounted inside a jewelry box and the servo will rotate it outside the box when the lid is opened. There is no room on the other side for a counter-weight because that would be outside the box.
beanflying:
Looks like you have something that will work :-+ With your tray consider making it without a bottom then fit either an Acrylic or 1/8" Ply one with a champher to locate it with a few spots of glue (epoxy preferably).
It will speed up your print and save you either having to deal with supports or the bridging issues above.
Just my rough idea below. In this case print it upside down with supports in the corner any marks or divots from that will be hidden by the floor.
Youkai:
--- Quote from: beanflying on February 19, 2020, 12:59:39 am ---With your tray consider making it without a bottom then fit either an Acrylic or 1/8" Ply one with a champher to locate it with a few spots of glue (epoxy preferably).
--- End quote ---
Interesting idea. The one I printed for the video was printed without supports and I'm still figuring out my 3d printer so my bridges are terrible. didn't really matter though it was just a test piece. I'll probably print the final with support as one piece but that's an interesting thought. I'll definitely keep it in mind for future items.
beanflying:
The basics of it are supports SUCK (mainly the removal process) and should be avoided at all costs whenever possible at the design stage bridges over 30-40mm I avoid where I can too ;)
The 45 Degree champher on my lash up will print fine inverted without supports so it is only the corner/pivot section that would need to be supported your slicer should handle that automatically. 3D printers for large flat slabs suck to a greater or lesser degree so adding in an external Flat bit of material saves time and will get you a nicer result.
As it sounds like your printer is only new to you your prints are underextruded (gaps in the print). Check the diameter of your filament first, make sure your slicer is set to that value not the stock one. If your filament is under the nominal 1.75 then you will need to bump up your extrusion multiplier, start with 5% in your case, print inspect and tweak also make sure the filament is not slipping at the extruder (spring and lever is tight). Also depending on your CAD package see if you can export in a higher number of poly lines this will smooth the circles to look more circular.
Watch a couple of these search results https://www.youtube.com/results?search_query=extrusion+multiplier
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