Haydns printed Mag Rods improved
Posted by o_lampe
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Haydns printed Mag Rods improved January 07, 2018 11:43AM |
While I'm waiting for the Delrin Mag arms for my Compact Carrier project, I printed a set from PLA. Haydn said, he uses a 3/8" ball end mill to smooth out the printed mag holder, I found a different way.
I replaced the M3 screw of a hotend with one of the ball studs, heated it up to 160°C and voilá :super smooth surface.
Edited 1 time(s). Last edit at 01/07/2018 11:44AM by o_lampe.
I replaced the M3 screw of a hotend with one of the ball studs, heated it up to 160°C and voilá :super smooth surface.
Edited 1 time(s). Last edit at 01/07/2018 11:44AM by o_lampe.
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Re: Haydns printed Mag Rods improved January 11, 2018 12:08PM |
The idea is to make the gap equal for all heat treated mag-holders. I don't think it's good to have contact between the ballstud and the magnet.
I modified the screw, I used to press the mag-holder onto the ball. Now it makes contact with the ball 0.1mm before the magnet would.
It's hard to see, but the screw protrudes the washer by 0.1mm
I modified the screw, I used to press the mag-holder onto the ball. Now it makes contact with the ball 0.1mm before the magnet would.
It's hard to see, but the screw protrudes the washer by 0.1mm
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Re: Haydns printed Mag Rods improved January 13, 2018 11:22AM |
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o_lampe
Nice idea, if you have these sort of things or tools at hand. I also thought of 5mm OD shims, but they are even harder to get. The 0.1mm gap isn't "official" yet. I'll get my Delrin magball kits next week, then I have a chance to check their gap for reference.
PTFE sheet can be found in laser printers. Old printers in junkyards, just be polite with the guys toting baseball bats
Edited 1 time(s). Last edit at 01/13/2018 11:24AM by MKSA.
"A comical prototype doesn't mean a dumb idea is possible" (Thunderf00t)
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Re: Haydns printed Mag Rods improved February 15, 2018 03:48AM |
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Haydn
I'm impressed! This is very clever!
I'd say it's ideal to have a gap of about 0.05mm between the magnet and ball stud.
Thank's a lot Haydn!
Have you seen my Rod-assembly Jig? It works like a toggle clamp and is very quick to engage/disengage.
If you like it, you can add them to your website or thingiverse. I don't claim any IP. ( Just a little bonus on my next order
)Edited 1 time(s). Last edit at 02/15/2018 03:48AM by o_lampe.
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Re: Haydns printed Mag Rods improved February 22, 2018 03:49AM |
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DjDemonD
Yeah I've never thought pla was dissolved in acetone. Is it plain pla or some hybrid material?
That's a good question. How much PLA is in PLA-filament? I remember the smell of the first spools PLA I used. Since 3DP became a mainstream hobby, the raised demand in PLA probably made them mix other stuff in as well? The smell is different now...
I once bought a banana-milk which contained 0.1% banana! Just enough to legally call it banana milk....
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