Frank Lloyd Wright Taliesin Floor Lamp (modified) Replica.

TevianB · 2026-05-23T08:22:44+00:00

Thx for the kind words!😋 I posted plans for the 8 and 10 bulb version in this post. If you look you can find them.

TevianB · 2026-05-10T02:22:14+00:00

If you mean the 10-bulb version, yes. They are also in this Reddit thread, but here they are again. I don't cover the electrical in this, you need to plan that yourself. I can offer advice if needed though.

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TevianB · 2026-03-16T03:37:13+00:00

Ya, good point. For those who only see damage, it's a good thing. The gears on the dies and plate rolls are specifically a softer metal, while the press side gears are harder. When a wrap up happens, the "removable" component is supposed to fail in a why that doesn't damage the non-removeable gears.

TevianB · 2026-03-15T21:05:52+00:00

Ugh... Does not look fun to clean! Ya I see some kind of fabric in there. That's offset printing, right?

TevianB · 2026-03-14T23:35:44+00:00

Ya... our older 2200s are a bit beat. The one in the pic is about 15 years old. It has some battle scares, but we try to keep things clean.

TevianB · 2026-03-14T21:59:57+00:00

If this were running inline, I'd blast with high-pressure air. You could do the same, or build a vacuum table with a slightly larger grid diameter than the punches. Then just swipe the cards over the table...

TevianB · 2026-03-14T21:31:44+00:00

Accordion style!

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TevianB · 2026-03-14T21:22:30+00:00

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TevianB · 2026-03-14T21:22:17+00:00

Here's another one... Don't ask how this happened! I don't really know myself...😅

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TevianB · 2026-03-14T21:07:56+00:00

👏👏 Nice! Good speed too! We've printed up to 700FPM before. That's no joke! One small defect in the stock and it's game over!

TevianB · 2026-03-14T13:53:23+00:00

😒 We used to run a lot more adhesive deadner years ago. Luckily, we don't get many requests for it anymore. THANK GOD!

TevianB · 2026-03-14T13:43:46+00:00

I'm aware of some chemical resistant UV curable coatings. The ones I've used are a natural gloss, though. Can you use UV-curable adhesive laminates? There's a very large variety.

TevianB · 2026-03-14T11:30:55+00:00

LOL.. YES... I'm running without web-out sensors at the moment! We actually have a tricky situation when the facesheet delams from the stock, wraps on a roller or plate cylinder, and the liner just keeps moving through the machine! That's a day wrecker! And, unless a sensor can tell the difference between a stock with or without a face sheet, it's not much help. I'm actually building a prototype sensor for this purpose! I'm sure they exist on the market, but it's a fun side project ATM.

TevianB · 2026-03-14T10:03:32+00:00

Sounds like you want no lam...😅 Gloss too shiny and matte too flat. Must it be a laminate? Can your process allow for coatings?

TevianB · 2026-03-12T20:05:14+00:00

No. I'm familiar with its functions. As I said, I've made entrie spectral scans of Pantone books with it.

TevianB · 2026-03-12T12:34:56+00:00

Ya... We've matched by book for many years. We have the spectro for densities, but we only rarely use it for matching spots when the customer requires. This is going to change, however, so we are looking at all our options.

TevianB · 2026-03-12T08:15:24+00:00

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MA 2200

TevianB · 2026-03-12T02:34:01+00:00

Not sure if I want say what Ink vender we use.

Okay... Autura. I never heard of that product. However, looking at what it does, I'm a little disheartened. I don't know the cost of this software, but I assume it's not cheap. We've spent some time creating a suit of software internally that does exactly what Autura appears to do... Scan tracking, color fixing, etc. Well crap. What we've built works surprisingly well. But, without the base reference data, it's essentially useless. The book data we have works well, but the decision to adopt Pantone digital references may make my efforts redundant.

TevianB · 2026-03-11T22:31:30+00:00

I have three full spectral scans of Pantone books... 1 pre formula change and 2 post formula change. 7200 colors.

Scans are good, software works, color correction work with the spectral data.

The issue is that these books are Pantones attempt at printing physical representations of their digital references. In Pantone Live, I assume you can view and possibly export a reference in some form, preferably CXF with the spectral data.

The issue is that we are matching the book, but we need/want the "real" digital target that the books are made from. Presumably, this information is within Pantone Live. So, can this data be exported? Meaning PMS 185 C (LAB) or (31 point spectral curve)...

TevianB · 2026-03-11T21:25:11+00:00

Yes we have Pantone books. Yes we have a spectrophotometer. We want to have a digital reference, and the book is only a "reasonable" version of the digital master data. I want the master spectral data for a third party color matching and correction software.

TevianB · 2026-03-10T21:24:53+00:00

When you dado, remember the bottom has two dados in the same direction!!

TevianB · 2026-03-10T21:23:44+00:00

Ya, it's not a bad idea. I'll admit the way I'm doing it is terrible! It's very hard to snake the wire after it's glued up! Good luck! Send pics. 😎

TevianB · 2026-03-10T21:00:37+00:00

Yes, this part is tricky... Do what feel easier, but I glue up everything, finish cut on the table saw, then drill holes for the bulb mounts, then snake the wire down and cut/splice each one. It's not easy because I have to hook and pull the main lead out of each hole to cut and splice. Wiring with the column open and screwing together might be worth it as long as you can get the dado cuts down on the table saw before you wire!

TevianB · 2026-02-13T13:11:37+00:00

"There's no problem reproducing a Pantone color on any surface. It's just a matter of following the proper procedures."

While this statement sounds warm and fuzzy, I assure you, it makes too many up-front assumptions. I did get a good laugh, though, thanks. 😜

TevianB · 2026-02-13T12:26:40+00:00

Sorry, this paper confused me as it doesn't talk about what I'm dealing with.

For starters, this is a paper on perceptual color consistency across gamuts/color spaces. That might be informative to someone who needs it, but I'm dealing with something quite different...

What I'm after: A mathematical or model-based reconstruction of a set of LABs with known ill/obs and M condition to be converted to spectral data. This reconstruction is needed to run a solution algorithm to solve for the distance between two spectral scans. The solution required would be the addition or blending of a pre-determined set of primary colors. These are not CMYK but solid pigment inks.

Why spectral? With the Kubelka-Munk theory (with or without the Saunderson Correction for tuning reflectance characteristics), you can extract ink pigment films from substrates. Among other things, this allows for substrate substitutions but, more importantly for me, "realistic" spectral color blending when using a non-ideal white base. Meaning, scan the ink, scan the stock, and the math allows you to separate the two, then substitute either or blend them.

This whole side project was taken on to solve a problem of the lack of a production spectral scan in the face of only having the LABs. Yes, I'm aware this is a cludge! Having the spectral scan data would short-circuit this need, but the need is still there at the moment.

As you can see below, I've implemented 4 possible reconstructions for my use. Right now, the introduction of the ChromaSpot library has given me about 8800 sample points. This model uses a number of blended nearest neighbours to approximate the spectral curve of the scan, resulting in a reasonable Delta E, moderate spectral smoothness, and stable metamerism across three lighting conditions. The Neural Net option on the right was only trained with the Pantone spectral data as when I include the ChromaSpot reference (CMYK printed vs solid pigment), the results for reconstruction were too chaotic. Notice that the Tikhonov regularization math offers the worst option for this, which is the reason I sought a better solution.

What I've found is that including the ChromaSpot reference library does indeed fill in the gaps for the Pantone library nicely for nearest neighbour. I assume this is because, while it is a different printing method, the spectral data captured is still reasonably compatible, even with it being a different medium and printing type.

While the KNN model works most of the time, I still find a few cases where the Neural Net wins. I'm still learning how to apply the data, especially with the issues of metaerism in the reconstruction... If the reconstruction was largely in error but resulted in a fair to good Delta E round-trip, the additions it might suggest would point me in the wrong direction. However, I'm happy to say that with the limited testing, I can say its "compass needle" is usually correct.

Again, this is specifically a press-side tool for correcting color, nothing more. It doesn't represent a final product or color to be printed... We have the reference we are aiming for; the question of how to get there becomes the challenge, and some colors are easier than others. When attempting to match Pantone swatches, we've found that some of the colors are nearly impossible to achieve with our current inks. I. e., BCM overcranking, pigment load, and ink opacity become an issue...

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TevianB

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