We have spring loaded ball valves on the 55gal drums of carpenter's glue in the carp shop. Apparently, years ago, some muppet carp forgot to close the valve after filling their glue bottle. 55gal of carpenter's glue is tough to clean up.
SceneryDriver
The climbing industry already makes what you're looking for. It's called a knot passing pulley; it allows a knotted rope (or two, tied end to end) to pass through the pulley. It's also a split sheave, so it's easy to get off the cables you just pulled...
I used some electroless tin plating solution to tin plate the copper traces on a PCB that I made in a class in college, years ago. The stuff worked great... on copper. Anyone have any idea if it will plate mild steel? I have some small brackets I'd like to add a little corrosion resistance to...
24V will absolutely damage the servo. Those are RC servos, and expect a ~5V PWM control signal. Most are designed to run on 4.8 - 6V (NiCad battery voltages). A few can operate on up to 7.2V. REALLY large RC servos can have separate motor power (12V or 24VDC) but still expect to see a 5V PWM...
Does it really matter? Either way, you'll have hardware falling on someone if the joint loosens. Followed very shortly thereafter by the piece of beam that the bolts and nuts were holding in the air. Design the joint properly, and assemble it properly, and nothing should fall out of the air...
We have hundreds of feet of 3-phase 208/120V Starline in the shop where I work, and it's very reliable. It is similar in concept to track lighting connections, but MUCH more robust. It's designed for industrial use. Correct procedure is indeed to power down the run before adding or removing a...
I have a 3D solid object (wire duct from Panduit) imported into AutoCAD 2015. I imported the .STP file from the manufacturer via the IMPORT command. I had to EXPLODE the object at least once (maybe twice) in order to be able to slice it for length and alter its color. The object's color is...
Stepper motors must be significantly over-sized in applications like this. "Sufficient" torque may not account for real world effects such as occasional binding due to dirt, imperfect assembly, etc...
If the motor isn't over-sized, it can start missing steps, and accuracy will suffer. A good...
The effectiveness (or lack thereof) of lock washers has been discussed over and over on this forum.
http://www.eng-tips.com/viewthread.cfm?qid=370111
They are of very little use when it comes to vibration induced loosening. Nylok washers are better - I use them all the time in electrical...
Late to the party, but:
Is there a reason you can't place a T/C-to-4-20ma loop powered transmitter on the rotating part of the machine, and transmit 4-20ma through the slip ring? It would do away with all the issues of dissimilar metals in the slip rings, and the current signal is arguably...
Talk to these guys:
http://www.anvilcase.com/products/
Road cases for touring productions do exactly what you're asking for. They can be made with pockets in the top to accept the casters of another stacked case. Every rock 'n roll tour since ever uses these type of cases. They're pretty...
Ebay is a great idea!
http://www.ebay.com/itm/20kVA-Single-Phase-Transformer-input-240-220-208-vac-output-208-120-vac-/321306408701?pt=US_Uninterruptible_Power_Supplies&hash=item4acf5ab6fd
SceneryDriver
This may work for you, although it dries through solvent evaporation. That may eliminate it from your consideration. Why can't you use a solvent-based adhesive?
I've used this before with reasonably good results on polyethylene tubing; it will stick with no surface prep, albeit with a...
If you can un-mount the door, laser cutting or water jet cutting can be a viable and cost effective solution.
A jig saw will certainly work; use a fine tooth blade, and work slowly and carefully. Cover everything around the holes with blue painter's tape. The tape will prevent the vibrating...
As a private pilot, I can attest to the mic-click receivers being a bit, well... temperamental. The runway lighting at small uncontrolled airports is often controlled this way.
3 clicks: lights up at Low
5 clicks: lights at Medium
7 clicks: lights at HIGH
Auto-off after some predetermined...
I think you will have trouble at that power level. You can derive approximately 340vdc by full-wave rectifying 240vac and filtering it. Capacitive voltage multiplier circuits will work to get you the voltage you desire, but would have to be physically HUGE to achieve your desired amperage...
