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Month: April 2014

Stepper Motors: Improving Performance – The Chopper Drive, Rail Voltage vs. Motor Inductance, Wiring Configurations

April 23, 2014 Al-Hala

Excellent Resource on why one would use an 80V DC Power Supply with a 5V DC Stepper Motor, and the most common bipolar motor wiring configurations. Selene – Stepper Motor Voltages Explained Selene – Stepper Motor Wiring Configurations  

CNCChopperDrive, Inductance, Stepper, Wiring

Excellent Post of the Costs of Supporting Hobby Level CNC and A Guide to CNC (from a moldmaking perspective)

April 23, 2014 Al-Hala

From the Hobbyist Machine Store and Guerrilla guide to CNC machining, mold making, and resin casting

CNC, Machining, Tips

An Excellent Overview on the Scope of CNC Machining Toolpath (Design, CAD Drawing, CAM generating, Controller)

April 23, 2014 Al-Hala

I was researching general hobby level CAD/CAM, and out popped this blog post. Having spent many an hour doing research on the subject, it struck me this is as good or better a write up as I could do. THMSblog Read more…

CNC, G-Code

General CNC Wood/Metal/Plastic/Composites Router Bit Information

April 22, 2014 Al-Hala

Several decent links: – This from the Fab Academy: Router Bit Basics – Decent basic description of the material types used in the above: Onsrud Cutter Tools (toolssxp.com) – AmanaTool.com’s description of various cutters: CNC Router Bits   Cutting MDF/Plywood/Laminates: Read more…

CNC, Tooling

Clamping Tips

April 20, 2014 Al-Hala

Found these reading various forums, and thought they were significant enough to keep track of. In no particular order or sort: – Spherical Clamping Washers: Clamp nut or cap screw is evenly loaded and clamping pressure is uniform, and square Read more…

CNC, ToolingClamping

Mini-Mill

April 20, 2014October 23, 2015 Al-Hala

Having worked with lathes in the past (both metal and wood), and having bought, used and then sold the TAIG lathe to my former workplace (they have lovely CNC turning machines, but they can’t work any stock less than 1″. Read more…

CNC

Extrusion Head for CNC

April 20, 2014 Al-Hala

Well, Why not? You’ve most of the machine there! Well, some people believe you’ll have accelerated wear on expensive ballscrews in localized areas, and the speeds will never approach those of a lightweight machine (throwing all that heavy cast iron Read more…

3D Printing (Additive Machining), CNC3D Printing, Extrusion Printing

Drag Knife, Tangential Knife

April 20, 2014 Al-Hala

Oooh! Sharp Objects! *coughs* A Drag Knife. Name is fairly descriptive of its purpose. The Spindle drags the knife behind it, cutting through the surface material. The material has to be fairly thin (think X-Acto style blades) in order for Read more…

CNC, Tooling

CNC Plotting

April 20, 2014October 23, 2015 Al-Hala

Let’s re-invent the wheel, while we’re at it! When I was a kid, plotters were the first printers I was exposed to (computer wise). I was in awe of them. Well, I’ve got this CNC machine, just sitting around… Two Read more…

CNC, Tooling

Engraving – Drag, Rotary, Burnishing, Laser

April 19, 2014October 23, 2015 Al-Hala

It’s the same thing all over. Got a hammer? Start looking for nails… Hey! I’ve a CNC mill! What can I do with it? *shakes head in shame*. Engraving. CNC. Cool. CNC engraving requires (what a shock) research. Rotary Engraving Read more…

CNC

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