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I was recently looking through some of my old game miniatures and terrain and found some pieces of “scatter terrain” that I’d made for the awesome post-apocalyptic car combat game Gaslands (think: Mad Max). These are probably some of the best pieces I’ve ever modeled and painted and I have no memory of the colors, techniques, and tricks I used (it was many years ago). I now kick myself for not taking notes. A decade ago, I was really good about keeping a Cahiers notebook with notes from my projects, what parts and techniques I’d employed. Because of that, I can still recreate those projects today. Seeing these successful terrain pieces has caused me to re-dedicate myself to keeping project notes and recipes, paint colors used, key learnings, etc. moving forward. Above is a notebook I made years ago for keeping shop notes in my garage. It hangs from a pegboard there.

An initiative led by the states to ensure rigorous, high-quality Career and Technical Education (CTE) programs.

The last time I got glasses, I let the salesman talk me into the UV/Anti-Glare coating, which I’d never had before. After time, the coating began to develop tiny, really fine scratches, which kept building and building. They got so bad, I was going to get new glasses — until a friend recommended Armour Etch, a glass etching cream you can get at art/craft stores like Michael’s or Dick Blick. The way it removed the coating, leaving me with a perfectly unscratched lens, was phenomenal!! I do experience a little more glare without the coating, but I can live with that — having the scratches was driving me nuts! Instead of having to spend $100+ on new lenses, I got away with spending a little over $10!

I sensori di visione industriali come le camere Cognex sono progettati per eseguire il controllo qualità e rilevamento errori sulla produzione in modo rapido e ...

The f-number (f#) and numerical aperture (NA) of a conventional lens are inherently coupled. We demonstrate a free-form broadband flat lens that de-couples the f# and NA.

Pupilaperture

In this Stumpy Nubs video, James looks at tools that have become indispensable in his woodshop. While this video is directed at woodworkers, covering things like the Milescraft router Omnibase and the Accu-Burr Burnisher and Scraper, other tools, like painting pyramids and the Airshield Pro Respirator and Face Shield can apply to other domains of makery.

数值孔径

LightTools Illumination Design Software. A complete design, optimization and analysis solution for illumination optics ... solutions that yield the best ...

Long-time maker pal Geoff Meston has been quiet with the video output for awhile, but he’s back, baby! To set the stage for future YouTube videos, he has redone his workshop. In this video he clearly and methodically chronicles his build process.

Hi Gareth... Always enjoy your newsletter. I don’t do a lot of projects that involve hammering but I have a new hammer I’m excited to share. I know there are reasons for long handles, but this hammer with a short handle is perfect for my 72 year old hands. The soft grippy handle is easy to hold. I have not tried the magnetic nail starter — it wasn’t a feature I was particularly interested in, but who knows? I may love it. Less than $10 on Amazon.

numericalaperture中文

A cool tool can be any book, gadget, software, video, map, hardware, material, or website that is tried and true. All reviews on this site are written by readers who have actually used the tool and others like it. Items can be either old or new as long as they are wonderful. We post things we like and ignore the rest. Suggestions for tools much better than what is recommended here are always wanted.

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Numerical Aperturecalculator

Sourangsu Banerji, Monjurul Meem, Apratim Majumder, Curt Dvonch, Berardi Sensale Rodriguez, and Rajesh Menon JW2C.4 CLEO: Applications and Technology (CLEO:A&T) 2020

Optical illusions are images or pictures that we perceive differently than they really are. Put another way, optical illusions occur when our eyes send ...

Fiber NA

2007218 — Magnification is calculated by dividing the image distance by the object distance. This can be represented by the formula M = -i/o, where M is ...

The long working distance objective lens infinity correction function and par focal length 95mm can be used for a laser system and coaxial observation.

Numerical aperture

Focal length refers to the distance between a lens's optical center and the camera's image sensor. This measurement critically dictates the angle of view ...

f-stop是什么

LED Wash Bars are perfect for "painting" a wall one vibrant color. Peruse these DJ LED light bars online today with KPODJ for quality ...

The f-number (f#) and numerical aperture (NA) of a conventional lens are inherently coupled. We demonstrate a free-form broadband flat lens that de-couples the f# and NA.

Sourangsu Banerji, Monjurul Meem, Apratim Majumder, Curt Dvonch, Berardi Sensale Rodriguez, and Rajesh Menon JW2C.4 CLEO: Applications and Technology (CLEO:A&T) 2020

Monjurul Meem, Apratim Majumder, Sourangsu Banerji, Berardi Sensale Rodriguez, and Rajesh Menon ATu4K.2 CLEO: Applications and Technology (CLEO:A&T) 2021

Monjurul Meem, Apratim Majumder, Sourangsu Banerji, Berardi Sensale Rodriguez, and Rajesh Menon ATu4K.2 CLEO: Applications and Technology (CLEO:A&T) 2021

Recently, while putting together a Swytch bike kit for my wife’s Cannondale, I stripped an M4 bolt on the kit’s battery mount. The bolt head was already below the surface so I couldn’t use my Dremel to turn it into a slotted head to back it out (a trick I have used too many times). I bumped into this product in a video and decided to give it a try. You simply apply a dollop to the head and back the bolt/screw out. I’ll be darned if it didn’t work. The main use of the product is to prevent cam-out in the first place. What is this sorcery? It’s a polyvinyl alcohol with a gritty mineral filler. As a result, it creates additional friction between the fastener head and the driver head. It basically gives you increased traction for driving in or backing out fasteners. And, as in my case, it can work to remove moderately stripped heads. Worth tossing into your toolbox.

I love industrial training films from the mid-20th century. This one, from 1942, would have been soon after America had entered WWII, many men and women were entering the industrial workforce, and in need of training like this. Takeaway tips:Use the right file for the job. Files come in single or double cuts and various coarseness levels. Single-cut files are for smooth finishes, while double-cut files remove more excess material. Use coarse files for soft metals, fine for hard. Apply pressure only on the forward stroke to get a clean cut and prevent scratches. Use a consistent, long stroke to maintain control and accuracy. Metal chips can stick to the teeth, causing "pins" that scratch the surface. Tap your file on wood, or use a file card, to keep the surface clear for precision filing.

I am so thrilled by the new paid subscribers I got after announcing a drawing to win a Workpro 18-in-1 multitool (my new favorite thing). I will be doing that drawing on Nov 9, so if you want a chance to win, please consider a paid sub. Paying for a subscription is a great way to keep my newsletter going and growing.I even got a Hero of the Realm subscriber! Thanks to Jim Coraci for supporting this effort. Be on the lookout for some fun goodies in the mail, Jim.

F-stops

customer care [ COMM. ] · customer support [ COMM. ] · customer service [ COMM. ] · account management [ COMM. ] · aftersales service [ COMM. ] · client care [ ...

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I got a huge bump in subscribers after a recent Retro Recomendo newsletter mentioned me. Twice. One piece was about Gar’s Tips & Tools itself (“Each issue has several handy tidbits about interesting tools, novel ways to use tools, and how to maintain your workshop”). The other was something I wrote for Cool Tools many years ago about these house paint touch-up bottles. “After you finish painting a room, pour a little of the left-over paint into one of these small touch up bottles. The plastic bottles contain a small applicator brush inside (plus a marble to shake/stir the paint) which makes it super easy to break it out to touch up as things happen.”

A word of caution: this acid (hydrofluoric) solution is for glass etching, so you CANNOT use Armour Etch on glass lenses; otherwise, you will literally etch and ruin your lenses. You must be certain you have plastic lenses. It should be safe on most polycarbonate lenses (it left mine completely unscathed). However, I’d only try this when you have nothing to lose. Always do a small test first, too. After applying the cream to a tiny spot, I went ahead and did the whole lens, coating each side for 1-2 minutes, rinsing, and then repeating. While I wore standard latex gloves and did this in a well-vented area, Armour Etch is designed for crafters, so it doesn’t require a fume hood or anything. Afterward, I rinsed the glasses for a few minutes under hot tap water, applied soap and water, and finally used a lens cloth. I was taking a big risk since I’d never done glass etching before and I wasn’t certain it would work. But it did, and I got a “like new” pair of glasses for just a few bucks!