My daughter is a professional photographer working for a large commercial corporation. Some of the studio cameras use lenses that mount on a lens board as you see here. That is not a real piece of board, but rather a cast aluminum plate. I think the idea is to make lens changes and adjustments easier.

On this one someone bought the lens board with a hole that was too small. Maybe they got a deal? You can always make a hole bigger right? Problem is most people do not know how to make the hole bigger. If they know, they probably don’t have the proper tool.

I was given another lens board with the hole being much larger than necessary. “Just make the small hole half way bigger than the large hole.” I was told. I love those accurate working dimensions. Ha!

It was dang close to being a 2 inch hole I suspected I needed. I bored the small one out to about 1.995 inches. I was actually thinking 2 inch but short is better than taking too much.

My daughter took the lens board to work and sure enough the hole was still too small. “It needs just a hair more, Dad!” was her request. Uh… “What color hair, kinky, curly or straight?” I went for red, curly.

In the pix I went out to 2.010, so I’ll see if I got the color right…

I just had a minor epiphany thanks to a comment in an email from my friend Ed. He said, “…I focus on my project and not on the tools unless they impact the project.” What a profound statement. I have been preaching that concept since day one on my web sites.

I often get asked, “What machine should I buy to get started in the hobby.” My stock reply has always been, “First decide what you want to build.” “Second, how much can you spend?”

Ed is an outstanding builder of small scale live steam locomotives and has a wonderfully equipped home machine shop, all top notch machines and tools. His comment hit me so true I could hear the angles singing. Well, almost.

I have read most of Kozo’s books and have seen photos of his modest workshop. He shows his shop in at least the A3 book and several others. I know THAT master builder has a very modest workshop.

Wonderful works are not judged by the machines used to create them. It is the skill of the operator that makes it art, not the chisel and hammer. Are the workshop and tools of Michelangelo famous and on display? No, just what was produced by their use. It is the work that is remembered, not the tools in the shop.

Yes, yes, someday there may be a special on TV about the tools of Michelangelo because some people will be interested, but it is not the tools that have made him and his work immortal.

We all have to decide for ourselves, what is my hobby? Is it making miniature live steam locomotives or owning fabulous machine tools? Neither answer is wrong. Doing both is fine if there is the space and the money. But if my primary desire is for what I can make and not the brand of tool I use to make it, then the choice of tool is clearly defined by the work and funding at hand.

For me, I cannot imagine a worse feeling than sitting in a workshop full of sparkling tools with no idea of what project I want to make or do. I have been in my own professional construction / installation type businesses for most of my life. I bought only the tools I needed to do the work that was providing my income and of a high enough quality to insure ultimate dependability. I still have some of those tools, still in operation after decades of hard and constant use.

I have often expressed “tool lust” in my writings. I think it is a common affliction for creative construction people. The best thing I do is expose it for what it is, an emotion and not a need. Yeah, it hard to keep them separate but all I have to do is ask myself, “Do I need it for what I am doing now?”  I force an honest answer and decide on that naked truth. Well, most of the time.  It has saved me from many squandering purchases.

Just yesterday I saw a 3n1, 12 inch, combo shear, break and roll tool in a HF tool flyer I got in the mail. “Wow”, I thought on impulse, “I can really use one of those in my shop for sheet metal work!” So I ran the test. “Do I really need it now?” “NO.” “Can I buy it later when/if I need one?” “YES” …and probably a better one as most versions are notoriously poor quality imports. The result is my cash is still safely in my business account.

Oh, I did look around and found a better quality version for when I do need one!

I had an inquiry about how the Taig Spindle could be taken apart and the cartridge used elsewhere. I had to be honest and admit I had never taken one apart to investigate. Taig products are so well built there was never a need to disassemble the spindle.

The new spindles are different than the older versions. The new ones have the cartridge insert from the end. It slides into a machined bore. The old heads have a split case. The pictures here are the old head. Both hold the cartridge in place with a recessed screw into the center portion of the cartridge.

I wasn’t and still not interested in pushing apart one of my ER spindles to view the cartridge. There may be no harm, but if it isn’t broke now, why look for a problem? The old split case is no problem. The side will almost fall off when the bolts are loose. Probably the reason for the change to the new style.

At first look it appears to be four bearings. The center section is not bearings (as far as I can tell). The end bearings are compressed against the center core providing proper bearing pre-load. The pre-load nuts are on the outside against the bearing case. The center section is under compression.

To me it looks like a very elegant design and has been trouble free. First class machining, not like the cheap imports. It HAS to be to run at 10,000 rpm. That doesn’t imply all imports are cheap but few are rated for that kind of speed.

So I suppose you could make your own spindle case if required. I run the spindle at 10,000+ rpm all day with no heat buildup (after initial break-in). Perhaps the cartridge could be pushed faster with bearing cooling. However, for the novice there are other requirements like dynamic balance. There is a lot of mass there.

I read the “speeder” 30,000 rpm spindle adapter on the Tormach machine is really rated to 20,000 rpm. Even then, they have had to resort to dynamically balanced ER16 collet nuts to run at that speed. Experimenters beware.

I was exploring some computer programming software information and I discovered this analogy. Is so good, I have to share:

…Simply stated, object-oriented design is a technique that focuses design on the data (=objects) and on the interfaces to it. To make an analogy with carpentry, an “object-oriented” carpenter would be mostly concerned with the chair he was building, and secondarily with the tools used to make it; a “non-object-oriented” carpenter would think primarily of his tools. Object-oriented design is also the mechanism for defining how modules “plug and play.”

I know what I am. What kind of hobby machinist are you?

OK, OK… I have kept this to myself for far too long.

There are lots of wonderful micro machine shop sites on the internet. One of them at the top of my list is called Micro-Machine Shop. Duh? I guess that’s not too hard to remember…

The site URL is http://www.finelinehair.com/home/index.htm.  I didn’t know what fine line hair meant; I assumed it could be something to do with ultra precise measurement.  Alan is a stickler for that, as a machinist should. I shortened the URL and it (he) is linked from a large hair products salon.

Yep, the creator of the site is named Alan. I haven’t found his surname yet, but it may be buried in there somewhere. Maybe he just likes to be more private than myself. No matter, Alan publishes a wonderful site for us machine tool addicts.

Somehow I think Alan has more tools and variations and measuring devices than actually exist in the world. Just take any major supply catalog like J&L, Enco, etc. and order one of each on every page. He must own both companies. In any case, he doesn’t have a big investment in full size machines (hence the name “micro-machine shop”) but there is no shortage of accessories.

Many getting started machinist ask me what machines are best for the money they have. You will see here it is not the machines that require the most money; it is what you add to them. Alan has far more money and time than I can ever hope to invest.

Did I mention his photography is nothing less than extreme topnotch?  Alan does in pictures what I do in words. In other words, about 1000 time more.

This is a highly recommended machine tool site to visit and bookmark. You will be very pleased I finally told you, but perhaps you already knew…

UPDATE: New URL

http://www.micro-machine-shop.com/

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