Monday, July 14, 2014

July Update

Note: This identical text may appear in the Kickstarter update section as well, but may not contain links or images. We had the pleasure of a visit by Steve Herchen of The Impossible Project, and a great lunch at Stone's Public House which is highly recommended. TIP, and Inoviscoat, are a partly combined entity and are interested in doing synergistic work that could lead to OEM arrangements, which we will consider as we move along.  We'd like to hear your opinion on us working more closely with TIP going forward.

In general, progress has been steady and a number of important milestones have been met. These include:

The Sleeve Machine is operating and produces usable assemblies. The system still needs to be calibrated, mounted on a rigid base, and the feed system needs to be built. One problem is the motor control which is too coarse so we will have to replace the servo with a stepper. Another problem are the tape guides which are too wide and need to be redesigned. None of these problems require discovery.

The Receiver Sheet design has progressed considerably but is not near completion.  A new reduced-step formula has been experimented with by Ted McLelland and Jake Kellett, and a number of test impressions have yielded fair Dmax and image formation, with some evidence of color control. We discovered that the neutralization scheme used by Polaroid to stabilize their receiver sheet is not very aggressive. We also saw using scanning electron microscopy the original receiver sheet which has lower porosity than imagined from the literature.  This is a puzzle.  An intensive discovery experiment plan will remain underway for this important component. The versatility of silver and its many forms astounds us!   I like the Ag2S the best, personally.

The Secondary Operation Tools - ten or so of them - are being designed and the next one is the cutoff tool followed by the corner notcher. We need to invent a method of heat bonding or using another adhesive step for the sleeve formation, and this is ahead of us for August, in all likelihood.

Test Samples of paper bases from an important vendor have arrived in small quantities. This is just the first step in what looks like a circuitous chain of events including laminating, rerolling, converting, coating, and further converting, in at least three location widely separated by geography.  Still, it all seems possible.

Our first film supplier agreement was finalized by Sam and there is now a production, shipping and payment schedule in place which will - if all goes right - result in about a third of our first production order arriving at our dock in August. The hot weather at that time makes us worry about heat damage so some heat sensors will travel along with the first shipment.  Sam will be visiting this vendor along with our importer/agent to assure that there is a proper understanding and commitment in place as we progress to production quantities.

The infamous clip tooling has finally been ordered. There was a lot of back and forth on this deceptively complex part regarding dimensions and tolerances, surface finish, base material, and edge radii. The clip is still about 7 weeks out due to a delay in the tooling order, but that is now in place and the vendor appears to be getting to it this week.

The air conditioning in the upstairs lab now works well, which means we can operate in the safer environment with a good fume hood and not melt.   I can't imagine what the electric bill will be like this Summer.

I am also still running after acquiring our own scanning electron microscope. There are dozens of these surplus for under 10K, so one would think we could get one in here and operating for 25K or less.  It is not clear we can, but I am still trying.

In general, much progress has been made but there are many things yet to be done, and some discovery in the form of coatings technology that still will require attention, possibly up to product release - and perhaps beyond.

Saturday, July 12, 2014

Machines and their complexity

A lot of times during the course of the project we are asked if there are specific machines already available for production that we can buy, perhaps as surplus.  A brief answer to this is no, there aren't any, but there are a few types of paper and web handling machines that do perform many of the operations needed.  We do not have any folding or creasing steps in the process, and that's intentional, but we do have adhesive steps, and the application of adhesives can be a messy business if not handled right.

Shown are some envelope making machines that produce ordinary envelopes that you might use to mail a letter or more likely, pay a bill with.  The principle of the system is to take a roll of paper and cut, fold, gum and shape, which should be simple.  But look at how complex these machines really are, with their many stages and sections devoted to certain operations.

The paper rolled out into a sheet is referred to as the web in the paper industry. Webs have coatings put on, get rolled and rerolled, cut and converted, laminated with other webs, and more. The world of paper and sheets is a vast one.

Polaroid did have some machines used for the production of the sheet film. For instance, the sleeve making machine which we have designed our own version, is an obvious example. You can see some of them in this video.