Shainin vs. 6-sigma

Opinion, but if you’re generating sufficient data to really use Shainin, and you’re getting results, I’m not sure you’d kick in SS.  The biggest challenge I see with Shainin is having a process / organization that allows all the needed data to be collected.
SS may be better in a “low data” environment. (ex: infrequent batches)  There are more soft tools and it’s better known.  Certainly more people are trained to some level in SS.
If you’re not generating sufficient data or the right type of data, you’ll have problems with either method.

Shawn,To solve problems with the same data that you already have is the definition of insanity. Do some research on confirmation bias. Not saying that your newly gained process does not work however, rarely do you have all the right people in the room to use the limited data that you have and you will need more. However, take Stan’s advice and look to see where Shainin fits into your current six sigma process. You should note that both have some strengths and weakness in areas but six sigma should be the guiding protocol. This should help you answer your own question.To qualify, I do teach a root cause analysis but you will see (look at other posts) that I don’t push what I do down people’s throats as a sales pitch. My posts are based on learned lessons and human factors. HF Chris Vallee

I’ve found that Six Sigma has much wider application in solving problems, but I do use some of the Shainin tools along the way.  Seems to have more application for high volume part/ass’y issues where comparitive analysis is needed – finding the BOB & WOW & multi-vari for example.  If you follow Shainin’s recipe solely it’s a lot of work and may not be effective in finding robust solutions – better on the up front diagnostics.  Looks better on paper than reality.  Best to be trained/experienced in both (and other disciplines) and use what fits best for the specific problem.  Don’t rely on one over the other and don’t get too wrapped up in the data/tools – include the process experts as well to get a complete perspective.  Take what your consultant says w/ a grain of salt – he’s got an agenda.  Do what give you best results for your industry/processes/environment.  I’ve done ptojects in a variety of industries and found each requires a different approach.  PFMEA’s worked wonders in food & chem plants.  Plastic inj molding required more DOE’s and stat analysis.  But all require untilizing a good team – remember Six Sigma nor Shainin doesn’t solve problems – people do.

Hello Bob –
I’m in the middle with a discussion with our Customer in regards to GR&R studies via ANOVA and ISOPLOT. I’ve been through a Shainin training several years ago and I don’t remember how to plot and or calculate the DR. Would you have some document to send me so I can review over the weekend in preparation for tomorrow’s discussion? Regards
–Marcelo ([email protected]

Ya wanna know the difference between consultants and BB problem solvers?  A good BB using the Six Sigma process can take a complex problem and break it down into a simple root cause & effect model – and offer sustainable solutions.  A consultant takes the simple and makes it complicated, pointing out all the risks until you’re paralized with fear and become dependent on them.