Welcome to the QA Tech-Tips blog!

Some see things as they are, and ask "Why?"   I dream things that never were, and ask "Why Not".  
Robert F. Kennedy

“Impossible” is only found in the dictionary of a fool.  
Old Chinese Proverb

Thursday, February 12, 2015

OOPS! - When disaster strikes
Do-It-Yourself Anti Static Spray (Part 4 of a series)

Hello again!

As I am sure you all know, this is the time of year for snowy evenings, hot-chocolate by the fireplace, warm cookies, soft music, and Static Electricity!

I am also sure that anyone who has been within 500 feet of anything electronic knows that Static Electricity is a Bad Thing, for more reasons than three.

Likewise, there are a number of companies who make special "Anti-Static Sprays", all neatly bottled in colorful packaging, ready for your use.  No to mention that they use about five cents worth of materials and charge you Serious Bucks per bottle/can/whatever.

So, what's a poor sod supposed to do?  Make your own!

It's almost as easy as falling out of bed, and costs just slightly more than that - not counting the hospital bills. . .

You will need:
  1. A spray bottle of some kind.  An old Window Cleaner bottle, a small trigger-pump bottle, or whatever you have laying around.
    I bought a small, 12 oz plant spray bottle awhile back for a couple of bucks, and have been using it over and over and over again for years and years and years.  If you notice your bottle begins to collapse inward on itself as you use it, adding a couple of small pin-holes at the top will help prevent that.
  2. A jug of the absolutely cheapest fabric softener you can buy.
    The no-name, lemon scented, bargain brand is more than sufficient, so don't waste your money on the stuff with the fancy packaging, fluffy towels, and baby-bottoms on it.  You will probably end up with a gallon jug of the stuff, and depending on how much spray you make, it will likely last for a loooong long time.  If your "better half" already uses fabric softener for the laundry, mooch some of that.
  3. Some clean, (demineralized), water.
    If you have nice soft water where you are, tap water is just fine.  If your water has a lot of minerals in it, use cheap drinking water, or get distilled water.  You just don't want a lot of minerals/lime/rust/etc. in the water.
How to make it:
  1. Fill the bottle that you're using about 1/4 full of fabric softener.
  2. Add clean water to fill the rest of the bottle.  Don't forget to leave some "head space" at the top.
  3. Shake gently until well mixed.
  4. Set the bottle to a fine mist and spray to your heart's content!
Two additional things:
  • You will want to cover surfaces, (rugs, plastic chair mats, your chair cushions, etc.) with a fine mist until the surface is slightly damp.  You may have to repeat every few days at the beginning until a sufficient amount of anti-static formula has built up.
  • You will also want to be very careful if you use it on smooth surfaces, like chair mats, as this liquid can be slippery if you apply too much.

There you are!  You are now equipped to handle the Static Electric Demon, and do it on the cheap!

What say ye?

Jim (JR)

p.s.  No animals were used during the testing of this Tech Tip, and it is safe for the Ozone Layer too.

Monday, November 17, 2014

 "Acceptable" Defects 
The Fast Lane to Disaster

Many years ago, I was invited to an interview in Boston by a company who wanted to bring on additional QA staff.  After the usual back-and-forth banter of the interview, the interviewer paused and asked me this question:

What is an acceptable defect?

I immediately replied  "There's no such thing.  It's an oxymoron, something that is inherently self-contradictory."

The interviewer persisted, wanting to know what an "acceptable defect" was.  I replied that there is no such thing as an "acceptable defect" as once the defect becomes "acceptable", it ceases to be a defect.  Or, as one of my favorite snarky QA quotes says:  "It's not a bug, it's a feature!"

The interviewer continued to press the point; and yes, I understood that what he was asking was not about defects being "acceptable", but rather he wanted to know at what point does a QA effort say it's time to stop?  When have you reached the level of "diminishing returns" and decide to release anyway, even though there may still be some bugs left to be resolved?

I mentioned this understanding to the interviewer, said that this was an entirely different question; whereupon I proceeded to answer it.  However I persisted in my original position that there is not, and there should never be, such a thing as an "acceptable" defect.

Needless to say, I didn't get the job.  And quite frankly, I wasn't too upset about it either.  As far as I was, (and still am), concerned, the idea of an "acceptable" defect presents a warped and possibly disastrous mind-set on the part of any QA team.

Why is this a problem?

Now I can hear everyone saying that I'm being too picky and pedantic; that I'm splitting hairs.  And maybe that's true, but I don't think so.

And why not?

It has always been my opinion, and my position within the greater QA community - not just "software" QA, but any kind of QA effort - that "defects" must never become "acceptable".  Because once a defect is categorized as "acceptable", it ceases to be an annoyance or an irritation in the back of our minds.  That nagging irritation goes away and we don't give it a second thought.

I have seen this time and time again, in hardware QA, software QA, process or manufacturing QA, or any other QA efforts I have been involved in.  And it has always, invariably, been the fast lane to disaster.

I go into the consequences of this kind of complacent, devil-may-care attitude in another article I wrote called The Cost of Complacency.  Go read it.

Again and again I return to the idea of defects never becoming "acceptable".  It is the responsibility of the QA community to ensure that defects, even seemingly small defects, never get "lost in the sauce", so to speak.

Even if we need to push on toward an ultimate release date, these defects should always "get in our craw", or be that annoying little pebble in our shoe.  They should always remind us that they are there, and we should continue be on the lookout for ways to mitigate them now, or if that's not possible, ways to avoid these issues in the future.

It's only by letting the seemingly "little things" get to us that we remain vigilant.  It is only by this continuing attitude of eternal vigilance that we in the QA community earn the respect of those around us.

By doing this, by always letting the "little things" bother us, we ensure that the people we work with, and those that depend on us, never sink into that abyss of complacency that has been the graveyard of those who have not heeded this call.

What say ye?

Jim (JR)

Wednesday, April 23, 2014

We Interrupt This Blog
For An Important Announcement!

Well, hello again!

If you have been following this blog, you know that I have some pretty big plans for this blog's future!

Part of those plans have been for me to build a WordPress "sandbox" server here in The Dungeon, try to migrate my blog to it, and try to do it in some semblance of order.  The idea being that if I'm going to make a complete balls-up of everything, (and I will, trust me!), I'd rather do it down in my basement where I can control the damage, instead of on a live production blog.

Of course, these things are much easier to say than do, and I am sure that the Wright Brothers had the same sense of angst:  "Hey!  If it's so easy for birds to fly, it should be a real snap for us too, right?"


It's taken days, and days, and days, and days, and. . . .  Oh futz!  It didn't crash, again?!!

Needless to say, it's been a real learning experience, in more ways than one.

One of the resources I have been using is WordPress for Dummies (3rd edition) by Lisa Sabin-Wilson, and if you're even thinking about messing with WordPress, you can do far worse than to read her book.

One of the things I learned about was something called "comment spam".

Comment spam?!  Of all the. . . . ! ! !

And yes, it had me scratching my head too.

Here's the deal:
We all know about e-mail spam.  That endless stream of scams, frauds, and phishing attacks; not to mention the never-ending advertisements for "Penile Enhancement", Viagra, Cialis, and God Only Knows what else.

This is the "plain 'ole every-day" mail-type spam that we all know and love.  It's designed to get us to do something that will compromise us, so that we give away important personal information about ourselves, send money to someone via Western Union or MoneyGram, or open up our systems to being attacked, root-kitted, and perhaps used as a zombie to hack the Pentagon.

Comment spam is a horse of an entirely different hue.  And it's even nastier.

Comment spam is a way of getting MY BLOG to help the baddies clobber someone else.  The way they do this is by hiding vicious hyperlinks inside innocuous messages, masked in such a way that you don't really know what you're clicking on until after you've done the dirty deed.

An even more vicious form of comment spam is a comment that has, (what appears to be), a perfectly innocent hyperlink that leads you to a seemingly innocent site that will re-direct you to somewhere evil.

You like my blog.
You read my postings.
You read the comments.
You click on what appears to be an innocent hyperlink in a comment.
YOU get hammered, and MY BLOG set you up for the kill.

The real epiphany was when I did a trial-import of all this blog's content and comments into my sandbox server.  Unlike Blogger, WordPress lets me see, (and do), anything I want with a message or its comments.  Nothing is hidden.  Nothing gets squirreled away.

Within WordPress, I could actually see the vicious bulldogs hiding behind the pretty flowers within some of the comments left on my site.  And it was scary!  Needless to say I was PISSED.

As a result I have had to do two things that I really did not want to have to do:
  1. I no longer allow "anonymous" comments on either of my blogs, since virtually all the nasties were hidden in anonymous comments.
  2. All comments, without exception, are now moderated.
    As unpleasant a task as it may be, I have no choice but to require every stinkin' comment to be quarantined until personally vetted by me.  And because I can't create a "white-list" of trusted posters, it's an all-or-nothing deal.
Additionally, I have to be really strict about embedded hyperlinks in comments.

If the comment has an embedded hyperlink, it get's trashed.  Period.

Because I just spent the last half-day-or-so going through every single message on this blog, comparing every single comment here with the nasties I found when looking at the comments on WordPress there, and removing, one-at-an-effing-time, any suspicious comments that I found; sanitizing the comment stream so that no one who comes to my blog gets hammered.

And why is that necessary?
Because Blogger won't let me edit comments or view hidden content.  And because I can't view hidden content, I can't see what might be hiding behind an embedded hyperlink without clicking on it, and I won't risk what loyalty my blog may have for the sake of a few hyperlinks.

One potential exception is the plain-text in-line hyperlink that is visible to everyone.  I might be convinced to allow in-line hyperlinks that are plain-text, after I have personally tested them and verified that they are not harmful - if they are germane to the topic of the post.

It's a sad day when I have to spend more time babysitting the few baddies out there, then I spend actually creating useful content.  However, I'd rather do that than see those of you who read my blog get hammered because I'm asleep at the wheel.

What say ye?

Jim (J.R.)

Friday, April 11, 2014

Refilling Ink-Jet Cartridges
Is It Really Worth It?

So. . . .  You're thinking about refilling your ink-jet cartridges?

In concept, the idea has merit.  Since you often have a perfectly good cartridge, all it's missing is the ink that used to be in it.  And it makes sense to replace the ink instead of the cartridge.  Or, as one refilling site put it, you wouldn't replace your car just because you ran out of gas.  Right?

One of the points that the cartridge refill sites love to make is that most, (if not all!), ink-jet manufacturers sell cartridges that are woefully short of ink.  To illustrate this point the folks at Printer Filling Station showed the result of a cartridge tear-down.  What these folks did was to take an OEM cartridge that was brand new, right out of the box in its sealed foil packaging, and open it up.  What they discovered was that it was actually less than half-full.

Photos courtesy of  http://www.printerfillingstation.com

And that's exactly where the printer manufacturers want it, because when you think about it, the printer manufacturers aren't selling the printer, they're selling the supplies because that's where the huge profits are.  And it's a virtual lead-pipe-cinch that if you have two printers manufactured by the same company, purchased at the same time in the same store. they will not use the same cartridge, unless they're the same model, or you're extremely lucky.  So, you need to stockpile multiple cartridge types if you have multiple printers.

Another kicker is that ink-jet cartridges have a very limited shelf-life, (like six months or so), even if the sealed package is not opened.  If you are smart enough to have spares on hand, and if you bought them more than six months ago, there's a good chance they won't work, or won't work properly.  And that's that.

That being said, this leaves you with the following choices:
  • Punt and Go Retro:
    Pen-and-ink, as well as pencil and paper still work, and it's a lot less expensive than any of the other choices.  Not to mention that typewriters can be had for a song at garage sales and flea-markets.

  • Abandon ink-jet technology:
    Laser printers are often more cost-effective on a per-page basis, and the supplies don't usually have the shelf-life problems of ink-jet cartridges.  Unfortunately a good laser printer is not cheap, and a cheap laser printer is often not very good.

  • Cave in and take your lumps:
    You buy the "Genuine" manufacturers cartridges, (that might be significantly under-filled), at hugely inflated prices.

  • Aftermarket Supplies:
    You can buy a "refurbished" cartridge for about half the price of buying one brand-new.  This is an attractive option for those who don't want to mess with refilling cartridges themselves, but don't like the idea of being taken to the cleaners by the ink-jet manufacturers.

  • Refill the cartridge yourself:
    You can refill the cartridges on your own and save huge amounts of money.

The last bullet-point brings us to the topic of this post:  Is it really worth it to do manual refills yourself?

Like everything else in life, there are two sides to this question, and depending on what your priorities are, refilling cartridges yourself may, or may not, be your cup of tea.  So, let's take a look at the pro's and con's of refilling.

The Good:
  • Cost:
    Refilling a cartridge can be significantly less expensive than buying a new one.
    • The folks at Printer Filling Station, sell a refill kit with a full set of inks, (three colors and black), for my HP OfficeJet 6500, right at $40 if you use the pigmented black ink, (which, IMHO, is the best choice), or $35 if you get the "regular" black ink.  Having bought the kit, you can get four, five, or maybe even six refills depending on the cartridge, and the size of the ink bottles you bought.
    • Here's a comparison of "Club" prices for "OEM" 920XL ink for my HP6500 printer:
      • Sam's Club:
        920XL Black two-pack: $61.98
        920XL Color three-pack, (one each of C, Y and M) $51.48
        Total:  $113.46
        ($82.47 based on 1/2 the double cartridge price for the black ink)
        See Search Results Here
      • BJ's:
        920XL Black two-pack: $57.99
        920XL Color three-pack, (one each of C, Y and M) $42.99
        Total:  $100.98
        ($71.99 based on 1/2 the double cartridge price for the black ink)
        See Search Results Here
      • Costco:
        920XL Black two-pack: $61.89
        920XL Color three-pack, (one each of C, Y and M) $41.89
        Total:  $103.87
        ($72.84 based on 1/2 the double cartridge price for the black ink)
        See Search Results Here

    • A comparison of non-club retailers for the same supplies:
      • Wall-Mart:
        920XL Black single cartridge pack: $34.48
        920XL Color cartridge single-packs, one each of Cyan, Magenta, and Yellow at $15.98 each: $47.94
        Total:  $82.42
        See Search Results Here
      • Best Buy:
        920XL Black single cartridge pack: $34.99
        920XL Color cartridge single-packs, one each of Cyan, Magenta, and Yellow at $15.99 each:  $47.97
        Total:  $82.95
        See Search Results Here
      • Staples:
        (They also have a combo pack, one 920XL black, and three standard 920 cartridges for the three colors for $58.89)
        920XL Black single cartridge pack: $34.99
        920XL Color cartridge single-packs, one each of Cyan, Magenta, and Yellow at $15.99 each:  $47.97
        Total:  $82.96
        See Search Results Here

      • Newegg, Tiger Direct, and OfficeMax had identical pricing to Staples when I checked.

      • Micro Center did not stock the "genuine" HP 920xl inks when I checked them.  They did sell refilled cartridges for about half everyone else's OEM cartridge price.

      • Some suppliers also sell aftermarket cartridges, but I did not include that information here since I wanted to show the pricing for OEM cartridges.

    • Good sites also give you everything you need to refill your cartridges, as well as four bottles of ink - the three colored inks and a bottle of black.  They also give you the support you need to get you "over the hump" of refilling.

  • Ecological:
    I like the idea of replacing the ink, not the cartridge, since the cartridges themselves can often be re-used over and over and over again.  By simply replacing the ink, you keep a whole lot of cartridges out of the landfill.

The Bad:
  • It's time consuming.  Refilling a cartridge is not something you do in five minutes, or even fifteen minutes.  Especially if you're not experienced or, like me, you don't have the world's steadiest hands.

  • It's messy.  Some refill sites will tell you how clean, and easy, refilling is.  Don't you believe it!  When I refill cartridges, I have a big, thick towel to put on the desk, I wear a smock to protect my clothing, and I wear the crappiest, grungiest shirt and pair of pants I own.  And I don't wear good shoes.

  • It requires a bit of skill and patience.  Like I said before, this isn't a quick job.  If you want just "plug-and-play" you should go with refilled cartridges, or brand new.

  • Your printer might not want to use refilled cartridges.  Most printer manufacturers do NOT want to give up their ink-sale profits, so they program the printer's firmware to be really pissy and anal about cartridges and their replacements.
    • It is not uncommon for your printer to receive an "update" and afterward you discover that the refilled cartridges you have been using for years, stop working.
    • If the printer is totally anal about this, (there are some Epson and Canon models that do this), you can purchase a small electronic tool that resets the cartridges chip to read "full" again.
    • Other cartridges cannot be reset by reasonable means, but you can buy replacement "chips" that you use to replace the existing chip, allowing you to use the cartridge again.

The Ugly:
  • Printer manufacturers do not want you to refill your cartridges!  Why?  Consumables are a HUGE source of profits for the printer manufacturers.[1]
    • John Shane, a director at InfoTrends/CAP Ventures and an industry expert on the ink and toner market, had this to say about it on news.cnet.com
      The estimated retail value for cartridges used in HP inkjet machines in the United States in 2004 was about $6.3 billion, according to Shane. That's just more than half the $12 billion Shane estimates as the amount for all cartridges for all machines used for desktops last year.
    • This same blog posting has a number of user comments, most of which go something like this:
      I am convinced that HP is deliberately doing something to prevent the use of replacement cartridges. My HP Photosmart C4680 rejects replacement cartridges, even ones that go under their specs. I don't know if they're somehow installing something on my machine (especially during any updates) or software installations.
Assuming you have the patience to deal with all of this, then it is possible that refilling cartridges is right for you.

So, you want to take a try at refilling?  What's next?

Again, just like everything else, there are things you have to know before you just dive in.
  • Get GOOD supplies:
    There are a lot of refill sites, and there are a lot of refill kits available in stores, and most of them are pure junk.  The inks are total crap, the tools stink, and it's just a bad deal all around.
    • The solution is to do your homework, and find a refill site that sells good supplies, and gives you the information you need to make an informed choice.  One of the best I've seen, (and the one I use), is Printer Filling Station.  They're located within the US, (Georgia to be exact), so you don't have to wait for your stuff to come by Hong Kong Post.
    • These guys have the best ink I've seen - and I've seen a bunch.  (And I have the totally ruined shirts and pants to prove it!)
    • Their support is nothing less than amazing.  I had some troubles with some HP 920XL cartridges and Gordon, the "haid-man-boss" down there, was with me the whole way.  Making suggestions, shipping out replacement components; it was like I was dealing with a member of the family, not a merchant in a state hundreds of miles away.

  •  Make sure you have a clear and uncluttered work area that can get messy.
    • Despite your best efforts, you will have to deal with some ink going where it does not belong.
      • As a side note, Windex is an excellent solvent/cleaner for ink that goes awry.
    • Wear old clothes, or a smock/apron of some kind and - if you can deal with them - latex/nitrile gloves.
    • Keep rags or paper towels around for general cleanup.

  • It is extremely important that you avoid cross-contamination of colors at all costs, since contaminated colors, even slightly contaminated colors, are essentially useless.
    • This is usually accomplished by the use of separate, clearly labeled syringes and needles for each color as well as black, and making sure that the syringes are thoroughly cleaned after use.
    • It is important to make sure that you do not press the syringe plunger all the way down into the barrel of the syringe after cleaning.  Since the plunger will stick, pulling it back about a half inch or so while it is still slightly damp gives you room to push back in the next time you want to use it, freeing the plunger up.  If it is pressed all the way in, it is often impossible to remove the plunger without the rubber tip coming completely off.

  • If you are going to be refilling your own cartridges - or buying "reconditioned" cartridges - it is absolutely essential that you do not allow any firmware or software update downloads to your printer.  Despite what the manufacturers say, these updates often have little to do with the "performance" or "quality" of your printer.  Rather they are periodic updates to the firmware so that it will recognize, and reject, refilled cartridges.[1]  HP's own web site says it succinctly:
    The HP Cartridge Authentication feature for HP printers helps protect you ["You"?  They mean their 6.3 billion dollar annual profits!!] by checking and verifying the authenticity of each cartridge installed in your printer. HP Cartridge Authentication comes standard with all HP inkjet printers and All-in-Ones.
  • It is also important to carefully read, and follow, the instructions provided by whomever supplies the refilling supplies.
Done carefully, with a certain amount of forethought, ink cartridge refilling can be a very economical way to stretch your printing supplies dollar.

What say ye?

Jim (J.R.)

[1]  There are a number of web-sites out there that discuss the practice of printer manufacturers deliberately "killing" replacement cartridges to force you to buy only the higher priced OEM consumables.

Rumors Circulate That Lexmark Firmware Update Locks Out Non-OEM Supplies

http://inkandtonerexperts.com/support/troubleshooting.php where they say:
Turn off auto updates - If you have your printer set up to do automatic updates from the printer manufacturer, you need to turn that function "off" or to "manual" instead of automatic. The reason this is important is because some manufacturers have been known to use this software upgrade as a tool to identify refilled cartridges in your printer and "kill" the cartridge(s).
HP says I can't use refilled ink

HP cracks down on cartridge refill industry

Firmware Updates Prevent You from Using Refilled Cartridges