A redesign of the GUS Arm for easy external stringing

[jwm]

My attempt to anneal my PLA arms for better strength did not go as planned... On the plus side, it is noticibly stronger, on the minus side, looks like this

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IMG_20170117_214010.jpg (3.3 MiB) Viewed 97029 times

New arms printing.

[Jfriesen]

I thought about annealing guess I'm glad I didn't try. But I haven't had any problems thus far with the strength of printed parts mostly.

Any updates on the build?

[ekaggrat]

ok getting bak to revising gus for the new arms.. i had built it according to the first arms and after a lot of head scratching realised that these arms are not compatible with 18mm aluminium drive spool and hence had a lot of string overlapping which was causing the the errors and it made it impossible to calibrate

so now i am reprinting the new arms.. is the repository upto date?
also the pulleys are now 604zz ? right?

thanks

[ekaggrat]

i think this forum is dead / inactive for a long time.. but anyways this is my gus 2.5 in progress

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WeChat Image_20180211103222.jpg (248.81 KiB) Viewed 1175 times

https://www.instagram.com/p/BfCVYqLnPBU/?taken-by=mectok

[maso]

I still think the GUS is one of the most fun-to-watch printer, and I've got a custom-cut aluminum bed waiting for me to undertake it some day.
So thanks for posting your progress, @ekaggrat!

How are you finding the accuracy of yours so far? It looks like the spiral vase is working well for you, but do you think you'd be able to, say, print a GUS arm with it?

[ekaggrat]

still struggling with getting the bed flat .. right now it is moving in a bowl shape. i can manage to print in the center. my 50 mm cube came out to be 48 x 48 x 50. approximately. still dialing in the calibration . i am in contact with jeff on youtube and he is helping me out a lot.. the print quality is as good as a delta but it is still not ready for prime time.

you can see a lot of my progress on the instagram.

https://www.instagram.com/mectok/

[Jfriesen]

Hello! I think one reason the forum has such low activity is new people have had trouble joining from my understanding. Anyways I try to check back on this thread from time to time but with n activity for so long I got lax.

ekaggrat, yes I use pulleys with 4mm bore. I do use 18mm aluminum spools you have to get the stringing just right to get good spooling without overlap. Did you get thosee owrking eventually?

I'll try to keep an eye out for questions/suggestions here

[tommythorn]

FWIW, I'm still following this project and think that all traffic, not least controller/software issues, are welcome.

[ekaggrat]

i am back on gus once again after shelving it for some time. i had shelved because i could not find the cause of it lifting the nozzle on the x corner. i finally found the cause yesterday when i was documenting it. apparently the new arm crashes into the hub if you try to make the nozzle go below a certain level..

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[Jfriesen]

Ah an interesting oversight in the design. Thanks for sharing!