![]() ![]() 030 solid wire ( HB-28 or Radnor) and C-25, the MM 180 is a real nice 1/8" or. Still though, the top end arc, and weld puddle wet out are definitely better on the MM 180, then they are on the MM 175. In my experience, the unit fired off a solid arc start everytime, when holding a stick out in the 1/4" - 1/2" range, even when the base metal had a light coating of soot on it.Ĭompared to the results the HH 187 produces, the top end spatter level could definitely be considered on the high side. Matter of fact, I felt its solid arc starts were one of it strong points. I field tested a MM 180 for at least 6 months, and I experienced no arc starting issues from the unit. Once its going, its beautiful.Lotta spatter on top end too.Tom, I can honestly state, 10 out of 10 times, I would without hesitation choose the HH 187 over the MM 175.īTW, I have quite a few hours put in on both units.ĭan, My MM180 is also finniky on the starts.Even worse when im on thin gauge. Weld puddle wetout on the top end is very good, and the spatter level is extremely low for the out put power level that the top end is capable of producing. The HH187 produces a very smooth consistent arc through out all 7 voltage taps. Once again as long as you have it tuned in properly, and are running a good wire, you should never experience harsh arc characteristic from the HH 187. As long as you have the unit set up properly, and the voltage to wire speed ratio dialed in reasonably to the right proportion, poor arc starts from the HH 187 should never be an issue. No matter your skill level though, between these two units, the HH 187 will always be the much easier unit to dial a solid arc in on. In contrast, the HH 187, depending on your skilll level, can be quite simple to dial a very solid arc in on. The MM 175 is very finnicky in the area of arc starts.The top end performance on the MM 175 is pretty rough too, meaning the arc is harsh, the weld puddle doesn't wet out very well, and there is quite a bit of spatter. The MM 175 is a nightmare to deal with, when it comes to tune in the arc properly. ![]() Post memes/jokes in /r/chemistrymemes and /r/chemistryjokes.The 187 is most definitely the better of the two, and it isn't even a close contest. Any such posts will be deleted.Īsk education and jobs questions in the current weekly topic. If you're looking for a more concentrated, advanced discussion of chemistry topics among professionals and grad students, check out /r/Chempros.īefore asking "What chemical is this?" see this chart. Click here for the OSHA chemical data site and here for a multicompany MSDS aggregate search. If you spill/injure yourself contact medical professionals and read the MSDS, do not post to this reddit. Yes links to blogs, images, videos, comics, and infographics are okay especially if they are on your personal website. No physorg, sciencedaily, or other press release aggregator spam! ![]() If a caption or explanation is included this helps, but please use your discretion.īefore asking about chemical drawing/illustration programs, look at your school's IT/software website and see if they provide an institutional license of ChemDraw (hint: if they have a chemistry department, they will) Likewise, simple pictures of uninteresting and garden variety chemistry-related things are not appreciated. No memes, rage comics, image macros, reaction gifs, or other "zero-content" material. However, academic discussions on pharmaceutical chemistry and the science of explosives are permitted. Rules: Violating a rule will result in a ban.Īsk homework, exam, lab, and other undergraduate-level questions at ChemicalForums otherwise it will be deleted.ĭiscussions on illicit drug synthesis, bomb making, and other illegal activities are not allowed and will lead to a ban. ![]()
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