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I'm playing around with 3d printed Hypocyclodic reducers. Hopefully I have the name right - reducers like this DARALI CYCLOIDAL REDUCERS

At the moment, all I know is if I have 16 roller pins...

The cutter looked huge until you picked up the work piece. What size cutter did you use, feed rate and depth of cut? I struggle to get these right - I usually go conservative and end up with long...

There is another post on cnczone about the AS5311. The guy didn't have great success with it -...

Unfortunately, I only have the chip - no breakout board to test it. I keep forgetting to build one each time I visit itead studio.

My 120degree axis is based on a fixed gantry design. I got a...

Sorry, typo - AS5311 - AS5311 - High Resolution Linear Position Sensor ? Hall IC - ams [edited link]

Not discouraged at all. I welcome the feedback.

The magnetic strip indicator was only for a B-axis that had 120 degrees rotation. I wouldn't try to join it - poles every 1mm, 10um accuracy. ...

Great thread. I've just spent the last couple of days reading it.

I'm planning (still in the dreaming stage) of building a 5-axis machine capable of machining steel.

I want a B-axis (rotate...

A general spindle question - the exploded photo of the BT30 spindle shows complete ball bearings with inner and outer races, whereas the ISO20 spindle only has balls in a cage. Is that something to...

I'm planning on building something similar. I'm going to make my Y-axis wider than the y-width of the table so I can move the spindle completely off the machine. (I saw this on a Sony Robokid). ...

I have a very rigid cnc router. It has a high speed spindle which isn't very good for cutting steel and aluminium. The router is also very open so cutting with coolant is out of the question.

I...

I need a couple pinion gears, 10 tooth, 0.6 module, for a 2mm press on shaft. Must be made from steel.

You can run...

dmesg

which will show a log of the system messages. This kind of failure in EMC will usually appear there.

If that doesn't help, try posting to the LinuxCNC mailing list. ...

Has anyone considered the Beagle Bone?

Similar power, 700MHz ARM. More expensive, $89, but lots of IOs.

BeagleBoard.org - bone

I'm not trying to pick a fight, but...

Why is everyone bashing the poor old parallel port? In what way is it unreliable? It may be outdated technology, but a PC with a parallel port has more...

I'm sorry, I don't understand your point. All I want is a post that will generate correct gcode. I want a post that understands that Mach will error on "R" words and will not generate incorrect...

It had nothing to do with my setup. The only variations in the GCode language EMC2 supports is mm/in, absolute/relative positioning, and arc center relative/absolute.

When I complained about the...

I'm a hobby user of AD and VM. I keep trying ADCAM, hoping that the integration of CAD + CAM will allow me to update a CAD design and have the CAM auto update, but whenever I try it, I just keeps...

Thanks.

I also found makerbot sells the low resolution variety, 15um at $3/foot - Magentic Adhesive Strip - MakerBot Industries

They also sell a complete kit, using the AS5306 - MakerBot...

I found the chip, but not the magnetic strip. Is there a part number for the 30cm magnetic strip?

Do you have a Digikey part number?

Thanks guys. I always learn a lot from this forum.

And CURSE YOU ALL! Now I'm going to have to go buy more cutters to play with.

A noob question about the down cut tools...

I always thought down cut tools were limited to edge finishing because they push the chips down into the work. Is that not the case?

$250 is still too much for a hobbiest like me.

There's a good DIY example...

LVDTs

I'm sure I can cobble something together for under $20. Maybe $30, with some LED bling.

I saw some at Digikey. $110 for a coil (.6mm movement), $140 for the board. They only have one coil in stock. Longer travel coils are available at $500 each in lots of 5. Ouch.

I assume these...

No offence taken. The first cutter I smashed was when converting the Mach3 probe routine from imperial to metric. It worked fine - touching off and setting the Z height to 50mm, but then it tried...

Make sure you still buy it through ebay so you have protection when something goes wrong.

I was stupid enough to buy a spindle only from him outside of ebay and what I got (after more than a...

I have many years of inexperience when it comes to touch off probes. I've broken some expensive cutters and damaged a nice touch off gauge because of operator error, bad programming and faulty...

This is a direct link to it.

http://www.cnczone.com/forums/740808-post18.html

That's a great simple design. The only issue is it wont hand over-travel very well. I didn't really spell out my requirements, but I also want to be able to set fine PCB milling cutters and drills....

What's the most accurate switch/sensor when it comes to repeatability?

Background...

I want to build a tool Z height sensor. I don't want to use the electrical contact type (tool completes the...