Recent content by fitz_calc

I have a linear slider with the following specs: Max allowable dynamic moment: 36.3 Nm Load capacity based on acceleration of: 0.3G Offset distance from center of slider to center of load: 305mm Mass of load: 50lb I did the following calcuation 36.2N*m = X(Kg) * 305mm * 0.3G *...

No never gave any insurance information to anyone, never spoke to the neighbor and only spoke to one officer via phone call while giving my side of the story... So the car owners insurance pays for it and that's it? No out of pocket for me as the Deductible is $0?

Hi PF: So I had an incident with a neighbor about a month ago. The long story short is my dog was on a leash in the back yard, leash was tied to one of those sprial "stakes" that thread into the ground. The dog saw something (neighborhood is full of squirrels), managed to pull the stake out...

I need a 5"x2"x1/8" 'cover' to protect some sensors from a drill bit. Occasionally the bit will run into the cover and chip away at material, etc. I need the cover to be dull and black, coating with a surface treatment won't work because over time the coating will chip away. What are my...

I have a part with a 2.5mm hole that sits inside a fixture (I need to verify hole presence), the hole can move anywhere around the slotted area due to part flexing, install force, etc. One idea I had was point an 850nm InfraRed light from the other side at the hole, then mount an IR light...

I have a small Lexan 141 dome I snap into a large piece of polycarbonate-ABS: I'd prefer to adhere with some other method, are any of you materials guys familiar in welding technologies? Would something like ultrasonic or vibration welding be a possibility for me?

Hi berkeman, Sorry for the poor explanation, I put together a real CAD model of my fixture: You are correct, the magnet sits inside the hole, lifts with a screw present, an optic sensor detects the magnets absence and tells a PLC the part is 'good'. Without a screw the magnet is not...

A mechanical design question, just wanted to pick your brains about a project I'm working on. I have a fixture that houses a magnet, when an operator loads a part with a screw the magnet jumps and a thru beam on the magnet detects that a screw is present. Without a screw (below) the magnet...

I "inherited" this 1.0lb smoked trout from a buddy, it's in my fridge right now thawing. I am not gifted in the art of preparing food so I come to you for advice; how would you prepare this? I have access to a grill but it's too cold outside, should I fry it up in a pan with some oil? Maybe bake...

Excellent ideas, thanks all for the help!

A lot of you seem like the "handy" type so maybe you can give me some advice. A friend of my had some acoustic foam on his wall (with spray-on adhere stuff), removed the foam, and now some foam is stuck and in other spots some of the paint was removed. 1. How should I remove the remaining...

So we managed to damage a wall at our apartment: http://i.imgur.com/gi5b4.jpg Handymen of the forums, how would you repair?

Homework Statement Find the value of dy and deltay for y=2x^3-4x, x=2 and dx = deltax = 0.1. The Attempt at a Solution dy/dt= 6(4)(.1)-4(.1) = 2 This is correct. However, I do not understand how to get deltay ? I tried 2/2*2^3-4(2) = .25 -- however, the answer is 2.12. how do they...

Homework Statement the max value of f(x)=x^3(40-x^2) on the closed interval 0<= x <= 40 occurs at x=? The Attempt at a Solution different problem, same story (notes are unclear, and the book only complicates things more). I know the answer is 24, but this will not help me on the final exam...

y=x+1 y`=1+0 y`=1 This is correct, but is my work correct -- or is the answer right only by coincidence?