The Hobbyist's Machine Shop – Blog

"One Perfect Part at a Time"

Air Pressure Station

I posted a new article in The Hobbyist Work Shop titled Air Pressure Station. I made some aluminum brackets to mount an air pressure regulator and a companion filter. Pretty basic stuff but you may learn something new about the mounting design of these components. Shown here is what it looks like mounted in place.

Taig Wrench CNC

I shot a video this weekend showing a Taig spindle wrench being milled on my Taig CNC mill.

For best viewing go to YouTube and view in HD full screen 720p. WOW! I used my Sony Alpha NEX-5 With it’s HD wide screen video ability. The raw full HD footage is spectacular but I had to edit down to 720P for YouTube. Here it is much less than that (around 360p). I don’t like the handheld movement and focus changes but it was easier than working around the tripod. I need to use the tripod… 🙂

Here are some stills. I had enough aluminum to make 9 wrenches on this run.

This wrench was actually one of my first projects with the Taig mill many years ago. I was using different software and controller but the results are the same. I also put a label on the handles of the original wrenches. I may do something similar on these new ones.

http://thehobbyistmachineshop.com/cms/projects/taig-wrench-set

This size wrench is just the right size and the soft aluminum (compared to steel) prevents damage to the spindle and collet nut. My originals show a little wear but are still going strong.

Enjoy the video for now!

Update 5/3/15

Today I just cut 6 more of these wrenches. I checked out the proper feeds and speeds in CNC Cookbook GWizzard and got each cut time down to 6 minutes, 40 seconds. Now running 19 IPM feed at 10600 RPM, plunge 10 IPM and DOC is .0377 or seven round trips. Big chips and a beautiful cut.

The Hobbyist’s Machine Studio?

I have been wondering if I should call my workshop a “studio”. Sounds more “artsy” doesn’t it? Since I am not working like a production shop just making one thing over and over, maybe the new description is more accurate. However, it doesn’t seem as hard core and “man cave” sounding like “workshop” or “machine shop” so maybe I should leave it as is. Is there an image to protect?

I’m just funning of course as I don’t really have an image I am concerned about. I just do what I do because it is stuff I like to do. I don’t care what the place is called where I do it. If you want to know the truth, it is a garage. The Aussie’s (and probably others) call it a shed or shedding. Go figure, but I kind of like their term. Another example; I call the location of my ham radio station my “shack”, but it really isn’t.

As far as the number of projects, I do have more than one under way. I am guilty about jumping around between them because there are so many things I want to try and so many things I can do. I just don’t seem to have enough time to do everything one at a time. I have to have something else to do when the glue is drying or parts are on order.

So maybe I need to be more “studious” with my projects? That infers more attention to detail and higher quality, right? I am thinking a studio is where you are more studious with your work and therefore your work is of higher quality. A workshop is where you simply pound things together with a hammer until they fit – more caveman style.… Continue reading

The Keys to TEDEX

I re-enabled TEDEX for open self-registration about a week ago. It has been closed for over a year. Note, this registration does not include automatic approval.

After several hours of being open the registrations started coming in again. There must be some sort of search engine discovering new open registration on line.

Approximately  99.99524 percent are from the Ukraine, Russia, China and other non English countries half way around the globe from the USA. Yes, I can trace every IP address. I allowed the first dozen access to the BBS to see what would happen. It only took a day for the first garbage post to be placed.

I blew away those first “dirty dozen” and have rejected hundreds of applications since. Some one failed the test and spoiled it for everyone.

All of them choose some mambo-jumbo user name mostly just a series of random looking letters. I don’t know who they are but I imagine they are kiddies playing with their computers and like to see if they can pass the “entrance examine”. Some are real spammers.

Mostly they just join, but the spam is what sets up the security fence. If they all look like a duck, walk like a duck, quack like a duck, swim like a duck and smell like a duck… well guess what… I am a firm believer in profiling.

I welcome real interested on-topic members from any country/nationality to join. However, I am not providing a blank wall for any internet hoodlum anywhere to display graffiti. There is no internet “right” for anyone to post whatever they please, only the opportunity. I control that opportunity.

There is a way into TEDEX and I provide keys in the welcome message, but it will remain difficult for the ducks. So if you wonder… Continue reading

Smoothstepper a Champion Again!

Once a real smoothie, then a stumble bum, now a VERY smooth stepper again. One tiny software update can change what became a chunk of lead back into pure gold. I don’t know what made the step controller a forgetful POS but I very pleased it has found its feet again.

I suspect it may have been Microsoft fooling around with the USB ports. It is always easy (fun?) to poke at a large and favorite target like MS. But perhaps it could be whomever wrote the USB driver code for Smoothstepper, left out an unneeded (at the time) refresh timer that was in the USB spec for critical devices all along.

It doesn’t matter. There is a fix and seems to be working perfectly. I am extremely impressed again with the very smooth operation. I just finished a six (6) hour run of continuous spiral micro machining of a round dome shape with lettering. That requires all three axis working very hard. I used three tools which means two tool changes with Z axis reset. It went flawlessly! Yes, my trust in the software and Smoothstepper is back.

Lesson Learned: When a new problem appears, I must think about what was just changed. A software update? If I can do a restore, I could see if the problem disappears. Always check web sites for bug reports. I may not be the only one with the problem. I never believe solutions I read from other users. They may be correct but there is a LOT of bad advice in forums. I look for official sources. They don’t respond first or very often. I look for official software updates.

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