[DIY] Smoke Absorver for Soldering/3D Printer enclosures and others - Page 1
Forum section: electronics / general

author: sn4k3
author_rank: Frequent Contributor
timestamp: August 13, 2019, 12:20:22 am
content: Project can be found here:https://www.thingiverse.com/thing:3807542Based on abusive prices of comercial smoke absorvers for soldering, i tried for to build my own. But problem comes with size, huge blowers require a big enclosure, for me i can do it in wood but the weight and build time not good to replicate or ship. So i had to come with a light alternative and 3D Printed for replication. In past i tried with agressive fans but they not have the static or sound like a airplane. Recently i found 9BMC24P2G001 which have great specs on paper. First i have built a version for 3D printer enclosure fumes which was successful with his function, and now i converted to soldering fumes.This still on test, advices and improvements are always welcome.So far this seens to do the job, up to 10cm it will suck the fumes, the output air is not 100% clean, my equipment detect about 40-60 Particles which classify as "Very Good".The problem is i don't have a comercial solution to test against, so in end i will give it away for testing, to who can do that comparsion.Air Leakage was other of my concern but it come out ok, i used o-ring's and glue at connectors and ports, but seen not required as no air detected from that holes. When at max. power if enclosure not screwed together, the vaccumm kept parts all together and very hard to pull while working, about 0.8A dropdown under vaccumm.Functions:Speed regulationTwo speed controls - Internal on box, and external with control boxPause / Resume fan3 Power on modes (Default / Power Off / Power last user state)Stackable design, put how many bodies you wantCan be battery operatedPortableSpecs 9BMC24P2G001:Working Voltage:24vRated Current:3.1ARated Input:74.4WRated Speed:8200 RPMMax. Airflow:111m^3/s | 1.85 m^3/min | 65.3 CFMMax Static Pressure:1950 Pa | 7.83 inchH2OSPL:69 dB (A)My Filter:Compound filter to trap GAC (125x125x15mm)Fill body with GAC (125x125x125mm)125x125x40mm HEPAPre-filterTo compare with, this blower have same specs as ERSA Easy Arm (https://www.kurtzersa.com/fileadmin/medien/members_final/Electronics/1_Technische_Datenblaetter/1.1_Tools/ersa_Datenblatt_EASY-ARM-1_und_EASY-ARM-2_eng_web.pdf)The filter can be use customized and i guess people can do great filters, better than i did. For example ERSA filter (https://www.ersa-shop.com/daten/54209/Filterzertifikat_f%C3%BCr_EA1_EA2.pdf)They use A F7 pre-filter, HEPA Filter and activated carbon granulate.

author: NiHaoMike
author_rank: Super Contributor
timestamp: August 13, 2019, 03:43:28 am
content: What I have found to work best is a high powered 80mm fan set in an open window (or bathroom with exhaust fan running if no window available) with a piece of duct attached to it. No filters to replace and the fan being far away can be run at a higher speed with less noise.

author: sn4k3
author_rank: Frequent Contributor
timestamp: August 13, 2019, 04:30:00 am
content: Quote from: NiHaoMike on August 13, 2019, 03:43:28 amExhausting out will always do and avoid the use of filters, but not everyone can do like that.Also my solution aim for portability, with the size and weight can be easy transported and work from a battery if required.