The Hobbyist's Machine Shop – Blog

"One Perfect Part at a Time"

Micro-milling Wax

0.005″ tapered mill bit

Perhaps not worthy of a VMC but wax milling is a good job for a mill like the Taig. That implies the Taig is an excellent machine for the job.

As shown elsewhere in this blog, I have converted the standard Taig (not ball-screw) to a water-cooled spindle capable of 25,000 rpm.

The spindle is overpowered for wax milling. It just loafs along at near idle power. I turned off the water flow and let the mill run for an hour without water flow. The spindle became warm, but no where near hot. A lot cooler than the Taig standard CNC spindle motor doing the same work.

I have said wax milling is very low load, so this doesn’t surprise me. It tells me my cooling system is certainly far over engineered. Water flow is slow enough that wastewater (down the drain) cooling is certainly feasible for short to perhaps medium milling. The flow rate needs to be the smallest trickle. I would suggest collecting the (clean) water for plant watering or other uses. 

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Taig Micro-Mill with HS Spindle

A video of my Taig mill with HS water cooled spindle running at 15,000 RPM milling wax double sided master for lost wax casting.  Sorry about vertical format. I know better but filmed this originally for quick share with a friend on  iPhone Messenger. Right click on image and open in new window for larger size and audio.

Taig Micro-Mill with HS-W/C spindle milling wax.

Tormach xsTECH Router

Tormach xsTECH RouterA first impression. My impression.  NOT a user report.

Note well:  It called a ROUTER not micro-mill. Or any type of mill.  Routers and mills are cousins, but don’t live in the same family group.

I was extremely excited when I saw this tool for the first time.  I like Tormach equipment and I especially like their Linux based PathPilot controller software. This little baby OH router, the Tormach xsTECH actually runs full strength PathPilot!

It’s also a complete, full house, tools and all, everything one needs to get up and running — 3-axis micro overhead router. WOW! Continue reading

The Siren’s Song

I have to admit to myself that I have run amok and spun off into the rocks along the shore of the barren hobby/craft islands for a while. Of course, that is figurative. I think I am still pretty much sane.

I am referring of course to my workshop interests and making tangible and valuable art and crafts. It was the song of the mythological siren creature that lured me off course. Maybe put me asleep. Its name is “3D Printer”. Ha!

Yep, I fell victim under its spell. I love design and making things and doing that with a 3D printer is very enticing. Continue reading

Plastic Rut

Man Sitting In deep rut.

Gosh! Haven’t posted here in a while. Got derailed and off track by playing with the demon of three-dimensional printing. You know, push a button and out pops a three-dimensional PLASTIC component.

Pretty much a sit back and watch effort. Similar but different than CNC machining. No chips flying around, or mist cooling required. Additive rather than subtractive manufacturing. It has its place but IMHO not for durable goods. Great for prototyping and making plastic models.

It is not the printing that is the most value. The printer is just another tool. The most value for me is the amount of CAD drawing (and mastering) acquired in designing parts for printing. The same skills that instantly transfer to good old fashion CNC machining.

The point is Plastic 3D printing is here. I have learned how to use it at a hobbyist level. But for making real, functional items, subtractive machining is still holding its own.

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