Questions about older engineering books I double majored in comp sci and accounting and am trying to self-teach myself engineering. I got some (older) textbooks from thriftbooks to give myself a bit of a crash course on just general stuff. Here is a list of the general subjects i got books in and the years that they are and I just wanted to make sure I wasn't going to read anything super outdated even though I am pretty sure alot of mechanical engineering has been set in stone for a very long time. Fluid... 1 5 replies
Should I consider myself an "Inventor" or a "Maker"? I have been making smart devices with ESP32 boards, sensors, relays, LCD screens, etc. Recently I made my own smart thermostat for a natural gas heater in my detached garage. I design and 3D print my own cases and enclosures for these devices. I'm learning how to use KiCAD to make my own schematics and eventually make my own PCBs. I use SolidWorks and Inventor to make my designs. I code everything myself. I also have been dabbling with resin casting by making 3D printed molds and things out... 3 6 replies
I Wrote a Handbook on Simulation in Python with SimPy Hi folks, I wrote a handbook on discrete-event simulation with [SimPy](https://simpy.readthedocs.io/en/latest/), designed to get you building simulations using Python. Kind of like the official documentation but on steroids. I have used SimPy for over a decade. Discrete-event simulation is useful for modelling real world industrial systems such as factories, mines, railways, etc. My latest venture is sharing my know-how on how to do this. If you do get the handbook, I’d really appreciate any feedback you have. Feel free to drop your thoughts here in the thread or DM... 2 2 replies
DIY Refrigeration cycle water cooler Hi! Can someone point me in the right direction for calculating and building evaporator and condenser coils for refrigeration cycles? Looking for anything, textbooks, math, articles, for calculating diameter, size, length, coil numbers. Stuff like that. I bought a tiny R134a compressor on ebay and am gonna make a refrigeration cycle. I'll turn the evaporator side into a concentric tube heat exchanger to cool the water for my laser cutter. Anything to point me in the right direction. Thanks for your help! 4 3 replies
PE Reference Materials Hi. I am an EIT in North Carolina. I'll be sitting for the Civil: Water Resource and Environmental exam in May. I am looking at purchasing an online prep course. I've narrowed my decision down to the following options: 1. Engineering Education and Training (EET) 2. Civil Engineering Academy I'm looking for recommendations or firsthand experience with either prep course. If you've done one or the other and insight to share on if it was worth your purchase, please let me know. Thanks! 5 1 replies
“Idiot proofing” a design only creates more creative idiots. Discuss. “Idiot proofing” a design only creates more creative idiots. Discuss. 1 10 replies
How does ERTMS Become Global Rail Signalling Standard? How does ERTMS Become Global Rail Signalling Standard? 1 0 replies
Weekly Career Discussion Thread (30 Dec 2024) \# Intro ​ Welcome to the weekly career discussion thread, where you can talk about all career & professional topics. Topics may include: ​ \* Professional career guidance & questions; e.g. job hunting advice, job offers comparisons, how to network ​ \* Educational guidance & questions; e.g. what engineering discipline to major in, which university is good, ​ \* Feedback on your résumé, CV, cover letter, etc. ​ \* The job market, compensation, relocation, and other topics on the economics of engineering. ​ \> \[Archive of past threads](https://www.reddit.com/r/engineering/search?q=flair%3A%22weekly+discussion%22&restrict_sr=on&sort=new&t=all) ​... 5 0 replies
Anyone have experience with publishing technical books with AIAA? I was recently made aware that AIAA provides publication services of technical textbooks for specialized fields within aerospace. Unlike a conference paper, this service allows for multiple authors that are Subject Matter Experts (SMEs) to come together and develop technical guidance on complex and niche engineering topics. I’ve published papers with them before, but never textbooks. Has anyone here published textbooks with AIAA before? 1 0 replies
Seeking Help to Improve the Durability of the Azeron Cyro (One-Handed Gaming Device) Hello everyone, I’d like to reach out to this community for help with a challenge I’m facing. As an amputee with only my right arm, I’ve adapted my computer usage by relying on the **Azeron Cyro**, a device specifically designed for one-handed gaming. It’s been incredibly useful in allowing me to stay active on my PC. For those unfamiliar with it, the Azeron Cyro is a joystick-keypad hybrid that uses mostly 3D-printed components with some aluminum parts. While the Cyro works well for my needs, I’ve noticed a significant... 5 2 replies
Volume of tube cooler I have a cooler with 148 , 1inch gauge 14 tubes. Its 10 ft long. It has 2 headers 5.5in x 6in x 10ft long. Is there a simple way to check how much bottles of 2200psi nitrogen botles i would need to leak test it? I dont know if there is a clever way to calc the volume but i did it the long route. But im still unsure how the N2 would compress the air. Im also concerned about wasting n2 by having the bank just leveling... 5 0 replies
Weekly Career Discussion Thread (23 Dec 2024) \# Intro ​ Welcome to the weekly career discussion thread, where you can talk about all career & professional topics. Topics may include: ​ \* Professional career guidance & questions; e.g. job hunting advice, job offers comparisons, how to network ​ \* Educational guidance & questions; e.g. what engineering discipline to major in, which university is good, ​ \* Feedback on your résumé, CV, cover letter, etc. ​ \* The job market, compensation, relocation, and other topics on the economics of engineering. ​ \> \[Archive of past threads](https://www.reddit.com/r/engineering/search?q=flair%3A%22weekly+discussion%22&restrict_sr=on&sort=new&t=all) ​... 4 1 replies
practical pneumatic/fluid dynamics reference book recommendations? Hi, I am trying to learn more about pneumatics/fluid dynamics to be able to make relatively accurate 'back of the envelope' calculations. For statics roarks formulas for stress and strain are very nice but I have not found an equivalent for pneumatics/fluid dynamics yet. Do any of you have any recommendations? Thanks 10 0 replies
Who are your go to suppliers for quick turnaround mechanical fabrication (US & EU)? I have personally used Protolabs for machining with good results. Looking for suppliers of the following services: -machining -sheet metal -weldments -coatings Part sizes ranging from 10 cm (4in) up to 2 meters (~80in). Quantitites 5-10 pieces. Quoting should take <5 days and items delivered in 4 weeks or less. Paying a premium for expedited work is less of a concern compared to the cost of delayed development. Thanks in advance! 16 0 replies
Look for a hard material to withstand galvanized metal rubbing it. Look for an alternative material to use as a guide for solar farm pile installation. Current OEM material is a softer plastic that wears very fast and isn’t very cost efficient. I am able to custom cut any material just not sure what would wear the least to make it more efficient. 10 0 replies
Exhaust stack wind/seismic/frequency calculations? I was looking around for a tutorial on designing a furnace exhaust stack for wind/seismic/etc. and really not finding much useful online. There are a ton of software options to buy, and we used to use STAAD pro, but what I'm wanting to do is go through the hand calculations so I understand it better. I'm coming at this as a chemical engineer/process engineer who has to work with the mechanical/structural guys. Is there anything useful out there as a reference? I'm tempted to just sit and read STS-1... 13 0 replies
Anybody with experience building hoppers for square items? I am building a hopper for 6mm square nuts. I need to them to come out the bottom of the hopper oriented vertically. The size of the square nuts is 10mm x 10mm x 4.6mm. My main question does anybody what angles are best on the sides of the hopper to be in order to reduce them from stacking up and "clogging" near the bottom. My best guess is steep but wanted to know if anybody had experience. 1 1 replies
Levels.fyi (Salary Site) Launches for Real* Engineers Hi All, I'm co-founder of Levels.fyi. Over the last few weeks I've been gathering feedback in the subreddits for each discipline (ex. r/MechanicalEngineering, r/ElectricalEngineering, etc.) on how to add each to Levels.fyi. For background, we're a Salary sharing site that's popular in the tech industry and software roles. There were dozens of comments and I had live conversations with some of you as well on how to structure the title taxonomy - thank you all! **Happy to share that we've finally launched** [**Levels.fyi**](http://Levels.fyi) **for the Real\* Engineers.** \*As a... 3 5 replies
Elegant solution to a packing problem I need to design a production line for soda cans and the last step is to put two 3x2 packs of cans, that are wrapped in plastic, on a cardboard tray thats already folded. The 2x3 packs come from a conveyor belt with the short side (2cans) parallel to the direction of travel. About a packet every 12 seconds. The trays can be supplied in any way (not manually), but preferably on a conveyor belt as well. The trays are made for 3\*4 cans (so 2 packs of 2\*3)... 4 0 replies