All - I'm at the beginning stages of investigating post-processing techniques that remove or significantly reduce reliance on IPA as a solvent. It stinks, is highly volatile, flammable, and difficult if not impossible to effectively recycle.
I discovered the pictured product, "Yellow Magic 7" from Bradley Systems, due to its use by a few people in the SLA printing community. I contacted the company and they kindly sent me a 1qt sample for testing with DLP resin.
This weekend I ran a small scale test and confirm it does a very decent job post-processing, if you use it in a heated ultrasonic cleaner. I heated the bath to 60C, turned on the sonicator and left about a dozen small, hollowed parts to clean for 10 minutes. I followed this up with rinse/agitation in hot tap water. Good results, and at ~$30/gal is much cheaper than ResinAway (which I have never used and am not claiming on-par performance - YMMV).
The only potential issue is that it doesn't appear to solvate all of the resin - you end up with little synthetic vesicles of resin floating around in the detergent, which can stick to the vessel walls, and potentially could make their way back onto the parts upon removal, etc. A silver lining might be that if you cure the bath with UV light I imagine those vesicles may solidify and just crash out of suspension allowing you to recover almost 100% of the cleaning solution in a fairly pristine state. But more testing is needed to confirm this...
I still have other even less expensive industrial cleaners to try. And based on some droplet testing I initially did, I may also try some IPA/detergent mixtures as adjusting the ratio appears to allow you to fine-tune this vesicle-creation property.
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Ken's HobbyShack
2019-04-16 01:14:16
Olivier Clément
2019-04-16 01:14:28
Alwin Chan
2019-04-16 01:35:20
Robert Maefs
2019-04-16 01:38:21
Robert Maefs
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Stefan Lukus
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Stefan Giudici
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Jarrod Smith
2019-04-16 02:02:37
Stefan Giudici
2019-04-16 02:03:48
Jarrod Smith
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Stefan Giudici
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Stefan Giudici
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Jarrod Smith
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Chad Farrell
2019-04-16 04:15:46
Thomas 'Noodle' Didcote
2019-04-16 04:28:54
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2019-04-16 04:33:59
Thomas 'Noodle' Didcote
2019-04-16 04:35:50
Olivier Clément
2019-04-16 04:37:33
Christopher Botha
2019-04-16 04:44:14
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2019-04-16 04:47:21
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2019-04-16 04:49:43
Jarrod Smith
2019-04-16 04:54:21
Jarrod Smith
2019-04-16 04:58:03
Wm Kuch
2019-04-16 04:58:07
Sam Cunningham
2019-04-16 05:01:44
Jarrod Smith
2019-04-16 05:02:54
Jarrod Smith
2019-04-16 05:12:11
Jarrod Smith
2019-04-16 11:18:12
