Project Euler (Python)
September 29, 2023
https://projecteuler.net/archives 0001 1 print(sum(x for x in range(1000) if (x % 3 == 0 or x % 5 == 0)))print(sum(x for x in range(1000) if (x % 3 == 0 or x % 5 == 0))) 0002 1 2 3 4 5 6 7 8 limit = 4000000 x, y = 1, 2 total = […]
AS 3740 – Waterproofing of domestic wet areas
June 14, 2023
https://www.architectureanddesign.com.au/features/list/bathroom-waterproofing-step-by-step-guide Australian Standards AS 3740 states that: In the shower, the whole floor must be waterproof and the shower walls should be waterproofed to at least 1800mm. Bathroom walls need to be waterproofed to at least 150mm. If the bathroom floor is made of or contains wood or if the bathroom is on the second […]
MPCNC part 7
June 9, 2023
When cutting 6mm HDPE in a single pass, I experienced lost steps and a glitching sound when steppers were kept enabled after the job had completed: GRBL is arguably better suited to CNC milling operations than Marlin (position updates during arcs, better compatibility with CNC.js). Geeetech GTK2560 v3.0 board uses an Arduino Mega. I […]
Sheet metal brake
May 19, 2023
Also called a pan brake or sheet metal folder. Not to be confused with sheet metal guillotine shear. A sheet metal brake is for bending sheet metal. Part names: Bending leaf Bending leaf handles (2x preferred) Stationary Bed Clamping bar (acute angle wedge shape with sharp corner, horizontally adjustable to perfectly align with bending inner […]
Fusion 360 pre-flight checks
May 19, 2023
Z-Up Stock Note: this only affects the calculated ‘box’ that represents the stock. It does not affect toolpaths / bodies. Can be ignored. Leads-ins / outs Think of a “running start” where you start your toolpath a bit early. Ramps To avoid plunging your tool into the material, you use a ramp. A milling bit […]
Aviation – safety
January 6, 2023
1. aviate. 2. navigate. 3. communicate. https://www.youtube.com/watch?v=iv_rRus-X9k light sport aircraft (LSA) have low wing loading and light control forces. https://www.youtube.com/@utopiasnow/videos elliot seguin test pilot vlogs https://www.youtube.com/@TheFinerPoints/videos instructor vlog https://www.youtube.com/@PilotSafetyOrg/videos instructor vlog https://www.youtube.com/@Boldmethod/videos commercial jet pilot vlog https://www.flightsafetyaustralia.com/2022/10/stalls-in-the-circuit/ beware unpractised stalls at low speed low height by changed angle of attack in-circuit at take-off or downwind […]
Aviation – learning
January 6, 2023
The knot is a unit of speed equal to one nautical mile (= 1.852 km) per hour, exactly 1.852 km/h (approximately 1.151 mph). multiply knots by two to get rough indication of km/h equivalent. One foot is 30cm. three and a bit feet in a meter. 9000 feet altitude is 3/10th or roughly 1/3th in […]
Recreational Pilot License (RPL)
January 6, 2023
Why? Why not. There are a lot of factors to consider, but some of the more obvious easily overlooked ones: Your licence is perpetual – it never expires! You will however be required to pass a medical every 1-2 years, and pass a flight review every 2 years. A recreational pilot license allows you to: fly […]