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Not only is going rock bottom cheap a waste of money. It's a waste of time. If you don't already know what's out there and how the items work you can waste months. I spent three months trying to...

LinuxCNC version 2.6 or later with correct release is supposed to have a 4axis wire cutter option. I haven't got it installed yet, but I hope I can get it to work. I really don't want to have to...

I don't have foamworks, but what's happening is almost certainly problems with the software setup.
Try running the cut at a constant speed- steps/second and use a separate power supply for the wire....

Resonance occurs at particular speeds, depending on the step frequency, where in the travel the carrier is, the length, pitch,and diameter of the screw and also how consistent the stepper drivers are...

The most popular Arduino program is Grbl(a g code interpreter on the Arduino that accepts commands from an interface on an a computer) and runs the drivers for the motors. Unfortunately the only way...

Springs are the cheapest. A short air cylinder that can be fed from both ends will work with a regulator to control the pressure and the force on the wire. Unless you are VERY critical on...

Lasers cut when the power in the beam is absorbed by the material. Different materials can have different absorption, as you've found out. Looked up some specs. It's designed to reflect heat,...

The point is, keep up to date on the latest research. There have been any number of papers published showing that corals evolved in an environment of constantly changing sea levels, temperatures,...

Eldon- for perspective put seas rising in perspective- https://www.fws.gov/slamm/Changes%20in%20Sea%20Level_expanded%20version_template.pdf
Just to summarize, after the last glacial maximum sea...

Depending on how serious your machine is, you could just vibrate/tamp small gravel or even 2B road gravel(it's been screened to get maximum packing). Fill the pieces and plug with a couple inches of...

Khalid, go back and do some homework. Please read something besides propaganda. Something by engineers and economists.

Both wind and solar are very periodic and require a watt for watt stationary...

Going by the admittedly rough estimates available for these things, about 44% of the US is arable land. About 33% is forest.
Based on that it would take 10% of the farmable land in the US to...

If you haven't fixed this by now, the 120 W supply wil drive the 50W tube, but it will have the capability to burn it out in short order if you apply too much power. Does the machine have a meter...

A good friend of mine was head of a renewable energy study at MIT back just before this became the topic of the day. They spent a couple of years on it. The bottom line, if you can build a house or...

correction- the change in the temperature is BARELY above the noise in the data.

Some good stuff here, and some nonsense.

I'll start with the nonsense. Global Warming/Antrhopogenic Global Warming/Catastrophic Global Warmin/Climate Change/ Catastrophic Climate Change/Extreme...

Haven't read the complete thread, it's been running too long. Basic physics, a screw has to mesh with some kind of screw to provide positive feed. How about a "string" nut- Think of a ballscrew...

I'd consider myself a "real" machinist since I make and sell machined parts, stock or custom, regularly. Not much training, and I'm slow, but it works.

I'll bite. What the heck. No one with any scientific background contests #1. GHG are a necessary part of the atmosphere for life to exist.

#2 The globe has warmed.... .75deg.C in the last 100...

It's an interesting execution, but why pair a high strength/stiffness backbone with plastic and aluminum slides? One of the benefits of cast iron in the RF-45 knockoffs is that it makes a cheap,...

Ian, regarding glaciers, one has to ask, are they retreating because they are melting, or because they are getting less snow? Makes a big difference.

The AGW'ers have switched the moniker to...

Oil/coal are being replenished, there is no reason to think the basic geology of the process has changed. What has changed is that for a looooong time the CO2 in the atmosphere has been way low, so...

One thing to keep in mind, any model that is based on existing data simply cannot be used to predict results outside the data range. This includes any model that uses data to approximate parameters,...

I've got a 600x 900 model of this I got from an estate sale at a good price. Needed to get a replacement tube which I got from JH Laser, direct from China. The manual calls it a Radium Laser...

NinerSevenTango-

BOTH the Republicans and Democrats want to use the lethal and coercive powers of the state. There is no difference in my mind between arresting someone without a warrant and...

Just out of curiosity, has anyone seen any reports of the various global warming models being run backwards, to see if they predict the previous ice ages, or starting them with boundary conditions...

You might also take a look at Kerk Motion. They have several series of anti backlash nuts that automatically take up any wear in a very rigid fashion.
...

The Rolscrew is designed for high load applications- obvious from the large bearing areas it uses. The Rolscrew could probably take a really heavy hammer blow on the carriage with no damage. A ball...

I'm assuming you want to print full size 3 view drawings of a part. If you look through the Solidworks print menus, or maybe the Windows menu for your specific printer you may find an option for...

Since you're looking on a CNC forum, presumably you want a computerized machine, and for not too much money. Looking at the Demand CNC machines, I'd estimate you could build a frame-type machine for...