TheClark Posted December 14, 2018 Author Share Posted December 14, 2018 Here is the working prototype. 3 Quote Link to comment Share on other sites More sharing options...
TheClark Posted December 16, 2018 Author Share Posted December 16, 2018 Progress! Pumping for 48 hours on a variant quite similar to this one at 140 mls/min. Super pleased with it so far. Put allot of effort into having the longest possible tubing life, some cool stuff happening! 2 Quote Link to comment Share on other sites More sharing options...
TheClark Posted December 16, 2018 Author Share Posted December 16, 2018 Tygon LFL tubing, larger diameter. Lower RPM due to larger tubing Metal rollers (bearings) for long pump head life Most shockingly... Prototyping with no surface to compress against. Tubing is not squeezed/rubbed against a printed part, only contacts the bearings. I haven't seen many like this, so cautiously optimistic... Quote Link to comment Share on other sites More sharing options...
TheClark Posted December 16, 2018 Author Share Posted December 16, 2018 And here is what 140 mls/min look like, I am thinking pretty low RPM... Quote Link to comment Share on other sites More sharing options...
SuncrestReef Posted December 16, 2018 Share Posted December 16, 2018 54 minutes ago, TheClark said: And here is what 140 mls/min look like, I am thinking pretty low RPM... Wow, that's impressive! Very cool. 2 Quote Link to comment Share on other sites More sharing options...
albertareef Posted December 17, 2018 Share Posted December 17, 2018 Pretty interesting for sure! I wonder how the elasticity of the tubing will hold up without the pressure plate stabilizing it from excess movement. Does eliminate the potential for wear due to the friction. Hmmm. 1 Quote Link to comment Share on other sites More sharing options...
milesmiles902 Posted December 17, 2018 Share Posted December 17, 2018 I was the first to thumbs up all your videos. 1 1 Quote Link to comment Share on other sites More sharing options...
milesmiles902 Posted December 17, 2018 Share Posted December 17, 2018 ..although I'm your second subscriber. I can do better. 2 Quote Link to comment Share on other sites More sharing options...
sroberts Posted December 17, 2018 Share Posted December 17, 2018 I am so impressed by all of your perserverance on this project. I hope it is working like you are hoping for! 1 Quote Link to comment Share on other sites More sharing options...
TheClark Posted December 17, 2018 Author Share Posted December 17, 2018 14 hours ago, albertareef said: Pretty interesting for sure! I wonder how the elasticity of the tubing will hold up without the pressure plate stabilizing it from excess movement. Does eliminate the potential for wear due to the friction. Hmmm. Ya, good point. I will use it live here and find out! Fun to try stuff for sure... Quote Link to comment Share on other sites More sharing options...
TheClark Posted December 17, 2018 Author Share Posted December 17, 2018 5 minutes ago, sroberts said: I am so impressed by all of your perserverance on this project. I hope it is working like you are hoping for! Thanks! Getting there. Quote Link to comment Share on other sites More sharing options...
pdxmonkeyboy Posted December 18, 2018 Share Posted December 18, 2018 next step... 3d printed rocket ship!! Sent from my SM-G930V using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
milesmiles902 Posted December 18, 2018 Share Posted December 18, 2018 MIT says it's coming: https://www.3ders.org/articles/20181207-mit-team-develop-3d-printer-thats-10x-faster-moving-than-comparable-3d-printers.html 1 Quote Link to comment Share on other sites More sharing options...
TheClark Posted December 18, 2018 Author Share Posted December 18, 2018 12 hours ago, pdxmonkeyboy said: next step... 3d printed rocket ship!! Sent from my SM-G930V using Tapatalk This guy is working on it Quote Link to comment Share on other sites More sharing options...
TheClark Posted September 3, 2019 Author Share Posted September 3, 2019 Long time no updates! The CR has been 'steady enough' tee-d off of my return pump. APEX ensures this... I still thing peristaltic is superior but life / duties call and pull me away now and then. I do plan to finish this thing this winter! 1 Quote Link to comment Share on other sites More sharing options...
Blue Z Reef Posted September 3, 2019 Share Posted September 3, 2019 Happy to see the update! I was just about to post on here the other day to ask for one! you think this would do dual head for auto water change decently? I almost bought a Masterflex dual head but the seller couldn’t figure out shipping 😞 Quote Link to comment Share on other sites More sharing options...
TheClark Posted September 3, 2019 Author Share Posted September 3, 2019 1 hour ago, Blue Z Reef said: Happy to see the update! I was just about to post on here the other day to ask for one! you think this would do dual head for auto water change decently? I almost bought a Masterflex dual head but the seller couldn’t figure out shipping 😞 If I could wrap this sucker up, I think it would be great for that purpose! Being stepper motor driven and the calibration, this thing is crazy accurate. Will definitely update when it comes back to life If you have close access to a floor drain though Jeff... My best APEX water change to date was the float based system (with multiple redundant floats). It quickly pumps water out of the sump to the low mark, then refills with premixed saltwater. I did 5 gallons a day for at least a couple of years minus the down time when remixing salt... It was quite reliable and had no detectable SG drift (on 450 gallon system). It isn't friendly for long runs though like a peristaltic based solution. You know all this though, just sharing 2 Quote Link to comment Share on other sites More sharing options...
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