About

I’ve Enjoyed Working on A Lot of Interesting Projects …

Drysuit Scuba 'Cold-Water' Diving in Alaska

Drysuit Scuba ‘Cold-Water’ Diving in Alaska

LOOK at LIST on SIDE for Projects ⇒ ⇒ ⇒

 

Cane Mill Bronze Casting and the 3D-Printed Pattern

WHY I CREATED THIS SITE …

On this website, I will share photos & CAD Photo-Realistic Renderings of my current projects, as-well-as Future Concept ideas … Some projects below water ~ Most above … There will be lots of experimenting … Results, etc.

Unfortunately there are many items I can’t show due to their proprietary nature
… However, will try to share as many of the ‘Just-for-Fun‘ projects as I can.

ColdLandCNC@gmail.com

iPhone_Submarine_1

iPhone Controlled Toy Submarine with GoPro Live Video

Also attempt to share SolidWorks Designs with others …
( Click on Any Image to See a Larger View )

SolidWorks CAD Software Photo-Realistic Rendering of Hydraulic Parts

… also Enjoy electronics projects …

L298N Dual H Bridge SolidWorks CAD Model

Hand Wheel CNC Encoder SolidWorks CAD Model

Many SolidWorks Design Examples can be Downloaded at GrabCAD.com
https://grabcad.com/charles.metaldesigner/projects?page=6

Download Free SolidWorks CAD Examples from GrabCAD.com

Note ~ I had to remove my ‘Area 51’ joke from this website because I got a few comments from people that because live in Las Vegas … *sigh* … Some individuals actually believe I work out in the ‘Area’… *LOL* … maybe? 😉

Mini-Sheet-Metal Bending Press for Small Home Workshops

Mini-Sheet-Metal Bending Press for Small Home Workshops

With that said, the purpose of this blog is to help me organize thoughts and to remember concepts at a later date, and also to log the dates of concept design ideas.   This blog is not secret; therefore, if you happen to find it and wish to read the blog, please ENJOY!!

MetalDesigner_Mod_SideView

3D-Printed R/C Micro-Rock Crawler ‘Concept’ Designed for Lynx Micro Tech

Sometimes help others with their Projects like these R/C Micro-Rock Crawlers

Screen-View of SolidWorks CAD Engineering & Design Software

Click to View 3D-Printing Micro-Crawlers
( Designed with SolidWorks )

The Original CAD Photo-Realistic Rendered 'Concept' Micro Rock Crawler Design

The Original CAD Photo-Realistic Rendered ‘Concept’ Micro Rock Crawler Design

I will be adding many Concepts & Projects to this Blog over the next few years.

Aluminum Vise Created with 3D-Printed Split-Patterns

Many of the CAD & .STL Files Can be Found on my GrabCAD Site …

https://grabcad.com/charles.metaldesigner/projects

Gumball Machine Concept as an Old Style Fuel Pump

Gumball Machine Concept as an Old Style Fuel Pump

Also SolidWorks Tutorials for Beginners …
… YouTube  →  SolidWorks Tutorial Video

Tutorial Videos for Individuals Learning to Use SolidWorks

I enjoy Metalworking , so there will be lots of Welding & Machining  …

Notch Cut in Tool Holder for Set-Screw to Hold Better

Notch Cut in ‘Radius Cutting’ Tool Holder for Set-Screw to Hold Better

… There are lots of Machining Projects Photos & Videos
Lathe Carriage Stop Digital Indicator

Another View of Vice Being Drilled on the Milling Machine

Another View of Vice Being Drilled on the Milling Machine

Casting Metal with 3D-Printed Patterns

3D-Printed Patterns with the Aluminum Metal Castings

3D-Printed Patterns with the Aluminum Metal Castings

… also create random posts of SolidWorks CAD Photo-Realistic Renderings …

22HP V-Twin Engine SolidWorks CAD Rendering

This 670cc V-Twin engine has the correct dimensions & weight ( and center of gravity ) for use in SolidWorks Assembly projects …

Testing a Hydraulic Pump Mount Design on the CAD Engine Model

Testing a Hydraulic Pump Mount Design on the CAD Engine Model

… also post whatever else seems interesting on a particular day … or night …

Silk-Scree Unit whereby every part will fit into several Flat-Rate unlimited weight USPS shipping boxes which saved over a $100 in shipping expense because weight of parts was no longer an issue …

Silk-Screen Printing Unit that Breaks into Small Parts for Inexpensive Shipping

Silk-Screen Printing Unit that Breaks into Small Parts for Inexpensive Shipping

… High-Res SolidWorks CAD Drawings of projects … ( Click and Zoom-in )

Adding Different Colors to CAD Drawings Helps Viewers See the Parts

Adding Different Colors to CAD Drawings Helps Viewers See the Parts

 

Design Plans can be Viewed & Downloaded from GrabCAD.com
https://grabcad.com/library/gantry-lift-table-complete-plans-1

 

Cuts Down on Mistakes When One Can Match the Part Number with Color

Cuts Down on Mistakes When One Can Match the Part Number with Color

 

Example of SolidWorks CAD Dimension Drawing with Matching Color Parts

Example of SolidWorks CAD Dimension Drawing with Matching Color Parts

I try to show building images and Finished Project photos to compare with the SolidWorks CAD Design drawings to show how accurate the design process can be from Start to Finish …

Table that Moves Up & Down to Allow Me to Pull Jeep Under it

SolidWorks Photo-Realistic CAD Renderings help visualize what an item will look like when finished … Even down to the Paint Colors and Product Labels …

SolidWorks Photo-Realistic Rendering Shows the Real Colors of the Project

SolidWorks Photo-Realistic Rendering Shows the Real Colors of the Project

I also enjoy to collaborate with other on 3D-Printing & Metal Projects …

3D-Printed Design to Hold a Cooling Sensor & Frozen Gel Packs

My goal is to provide fabricators with more information about 3D-Printing.

3D Printing a Hard Hat Cooling Prototype Design for 100+ F. Heat

After each project I try to write an post with CAD renderings of the design process and also images of the finished 3D-Printed parts.
Example:  3D Printed BBQ Door Hinges

Finished 3D Printed Part Created for a ‘Just-for-Fun’ 3DP Collaboration Project

Please feel free to contact me in the COMMENTS area …

3D Printed Mount to Cool Workers’ Heads in the Las Vegas Summer Heat

I design a lot of Flat-Patterns for people that with to have bent metal parts …

Motor Cover Designed with SolidWorks out of Bent Sheet Metal

SolidWorks allows me to dial in the perfect bend deductions & allowances so finished parts come out to the correct dimensions when they are bent in a press brake.

Flat-Pattern Sheet Metal Design that includes the Bend Deductions

Fit-Ups can be tested in SOLIDWORKS before any parts are cut saving $ …

Different View for a Belt Sander/Grinder Designed with SolidWorks

If you want to Learn more about Electronics and Arduino Micro-Controllers
Watch Paul’s Tutorials on YouTube … They are GREAT!!

Paul’s ARDUINO Tutorials on YouTube

Paul has a Link where you can buy a very inexpensive Kit allowing you to use the exact items he uses in the Tutorials … I ended up buying an additional kit along with the one from Paul to have extra parts to expand on the Tutorials because the Kits are much easier than trying to find/buy individual electronic parts.

SolidWorks Drawing of the ARDUINO Mego Micro Controller

Thank You Miss Brenda for the Photo of the Bighorn sheep for Silk-Screen!

Silk-Screen Rendering Photo of Desert Bighorn Sheep by Miss Brenda

Silk-Screen Rendering Photo of Desert Bighorn Sheep by Miss Brenda

I don’t sleep much, so if going to work long hours at night on SolidWorks CAD drawings, I might as well be comfortable: therefore, created a computer stand/table which allows the monitor to reach over my LazyBoy Chair.

Computer Table Unit Designed in SolidWorks and then Fabricated

Computer Table Unit Designed in SolidWorks and then Fabricated

With this setup I can easily see the computer screen & TV at the same time and work for long hours on CAD model design without getting sore.

LazyBoy Chair SolidWorks CAD Work Area

LazyBoy Chair SolidWorks CAD Work Area

–CHEERS… 

Acting_Silly_4_Camera

Acting Silly for the Camera … CHEERS!!!

.  .  .

Golden-Ratio

Under Ocean

Symbols Below?  … From time-to-time I am on remote devices whereby the
Keyboard does not have keys for these symbols…  I copy/paste from here.

Π  Δ  θ  ∅  Ω  μ  Σ  Φ  ∞  ≈  ÷  · ½ ¼
° ∠  ±  ≠  ≡  ≤ ≥  ≪ ≫  ‴  ⟨ ⟩ ⌊⌈⌋⌉  π  ø  τ
A² B³ √C  ∛D  ↑⇐←⇒→↦⇔↔ ⊕   ̂ Ι  τ
∴  therefore
∵  because

Above symbols?  … from time-to-time I am on remote devices whereby the
Keyboard does not have keys for these symbols…  I copy/paste from here.

2 ̂15 = 32,768
∴ frequency 32,768 Hz = 32.768 KHz

τ = R * C

BASIC MATH SYMBOLS
https://www.rapidtables.com/math/symbols/Basic_Math_Symbols.html
Symbol Symbol    Name Meaning  /  definition Example

=   equals sign equality 5 = 2+3     5  is equal to 2+3

≠ not equal sign inequality 5 ≠ 4     5 is not equal to 4

≈ approximately equal approximation sin(0.01) ≈ 0.01,
x ≈ y means x is approximately equal to y

strict inequality greater than 5 > 4     5 is greater than 4

< strict inequality less than 4 < 5     4 is less than 5

≥ inequality greater than or equal to 5 ≥ 4,
x ≥ y means x is greater than or equal to y

≤ inequality less than or equal to 4 ≤ 5,
x ≤ y means x is less than or equal to y

( ) parentheses calculate expression inside first 2 × (3+5) = 16

[ ] brackets calculate expression inside first [(1+2)×(1+5)] = 18

+ plus sign addition 1 + 1 = 2

− minus sign subtraction 2 − 1 = 1

± plus – minus both plus and minus operations 3 ± 5 = 8 or -2

± minus – plus both minus and plus operations 3 ∓ 5 = -2 or 8

* asterisk multiplication 2 * 3 = 6

× times sign multiplication 2 × 3 = 6

⋅ multiplication dot multiplication 2 ⋅ 3 = 6

÷ division sign / obelus division 6 ÷ 2 = 3

/ division slash division 6 / 2 = 3

— horizontal line division / fraction \frac{6}{2}=3

mod modulo remainder calculation 7 mod 2 = 1

. period decimal point, decimal separator 2.56 = 2+56/100

ab power exponent 23 = 8

a^b caret exponent 2 ^ 3 = 8

√a square root
√a ⋅ √a = a

√9 = ±3

3√a cube root 3√a ⋅ 3√a ⋅ 3√a = a 3√8 = 2

4√a fourth root 4√a ⋅ 4√a ⋅ 4√a ⋅ 4√a = a 4√16 = ±2

n√a n-th root (radical) for n=3, n√8 = 2

% percent 1% = 1/100 10% × 30 = 3

‰ per-mille 1‰ = 1/1000 = 0.1% 10‰ × 30 = 0.3

ppm per-million 1ppm = 1/1000000 10ppm × 30 = 0.0003

ppb per-billion 1ppb = 1/1000000000 10ppb × 30 = 3×10-7

ppt per-trillion 1ppt = 10-12 10ppt × 30 = 3×10-10

 

GEOMETRY SYMBOLS
Symbol Symbol    Name Meaning  /  definition Example
∠ angle formed by two rays ∠ABC = 30°
measured angle ABC = 30°
spherical angle AOB = 30°
∟ right angle = 90° α = 90°
° degree 1 turn = 360° α = 60°
deg degree 1 turn = 360deg α = 60deg
′ prime arcminute, 1° = 60′ α = 60°59′
″ double prime arcsecond, 1′ = 60″ α = 60°59′59″
line infinite line
AB line segment line from point A to point B
ray line that start from point A
arc arc from point A to point B = 60°
⊥ perpendicular perpendicular lines (90° angle) AC ⊥ BC
∥ parallel parallel lines AB ∥ CD
≅ congruent to equivalence of geometric shapes and size ∆ABC≅ ∆XYZ
~ similarity same shapes, not same size ∆ABC~ ∆XYZ
Δ triangle triangle shape ΔABC≅ ΔBCD
|x-y| distance distance between points x and y | x-y | = 5
π pi constant π = 3.141592654…
is the ratio between the circumference and diameter of a circle

c = π⋅d = 2⋅π⋅r
rad radians radians angle unit 360° = 2π rad
c radians radians angle unit 360° = 2π c
grad gradians / gons grads angle unit 360° = 400 grad
g gradians / gons grads angle unit 360° = 400 g


ALGEBRA SYMBOLS

Symbol Symbol Name Meaning / definition Example
x x variable unknown value to find when 2x = 4, then x = 2
≡ equivalence identical to
≜ equal by definition equal by definition
:= equal by definition equal by definition
~ approximately equal weak approximation 11 ~ 10
≈ approximately equal approximation sin(0.01) ≈ 0.01
∝ proportional to proportional to
y ∝ x when y = kx, k constant

∞ lemniscate infinity symbol
≪ much less than much less than 1 ≪ 1000000
≫ much greater than much greater than 1000000 ≫ 1
( ) parentheses calculate expression inside first 2 * (3+5) = 16
[ ] brackets calculate expression inside first [(1+2)*(1+5)] = 18
{ } braces set
⌊x⌋ floor brackets rounds number to lower integer ⌊4.3⌋ = 4
⌈x⌉ ceiling brackets rounds number to upper integer ⌈4.3⌉ = 5
x! exclamation mark factorial 4! = 1*2*3*4 = 24
| x | single vertical bar absolute value | -5 | = 5
f (x) function of x maps values of x to f(x) f (x) = 3x+5
(f ∘ g) function composition (f ∘ g) (x) = f (g(x)) f (x)=3x,g(x)=x-1 ⇒(f ∘ g)(x)=3(x-1)
(a,b) open interval (a,b) = {x | a < x < b} x∈ (2,6)
[a,b] closed interval [a,b] = {x | a ≤ x ≤ b} x ∈ [2,6]
∆ delta change / difference ∆t = t1 – t0
∆ discriminant Δ = b2 – 4ac
∑ sigma summation – sum of all values in range of series ∑ xi= x1+x2+…+xn
∑∑ sigma double summation
∏ capital pi product – product of all values in range of series ∏ xi=x1∙x2∙…∙xn
e e constant / Euler’s number e = 2.718281828… e = lim (1+1/x)x , x→∞
γ Euler-Mascheroni constant γ = 0.5772156649…
φ golden ratio golden ratio constant
π pi constant π = 3.141592654…
is the ratio between the circumference and diameter of a circle

c = π⋅d = 2⋅π⋅r

LINEAR ALGEBRA SYMBOLS
Symbol Symbol Name Meaning / definition Example
· dot scalar product a · b
× cross vector product a × b
A⊗B tensor product tensor product of A and B A ⊗ B
\langle x,y \rangle inner product
[ ] brackets matrix of numbers
( ) parentheses matrix of numbers
| A | determinant determinant of matrix A
det(A) determinant determinant of matrix A
|| x || double vertical bars norm
AT transpose matrix transpose (AT)ij = (A)ji
A† Hermitian matrix matrix conjugate transpose (A†)ij = (A)ji
A* Hermitian matrix matrix conjugate transpose (A*)ij = (A)ji
A -1 inverse matrix A A-1 = I
rank(A) matrix rank rank of matrix A rank(A) = 3
dim(U) dimension dimension of matrix A dim(U) = 3


PROBABILITY and STATISTICS SYMBOLS

Symbol Symbol Name Meaning / definition Example
P(A) probability function probability of event A P(A) = 0.5
P(A ⋂ B) probability of events intersection probability that of events A and B P(A⋂B) = 0.5
P(A ⋃ B) probability of events union probability that of events A or B P(A⋃B) = 0.5
P(A | B) conditional probability function probability of event A given event B occured P(A | B) = 0.3
f (x) probability density function (pdf) P(a ≤ x ≤ b) = ∫ f (x) dx
F(x) cumulative distribution function (cdf) F(x) = P(X≤ x)
μ population mean mean of population values μ = 10
E(X) expectation value expected value of random variable X E(X) = 10
E(X | Y) conditional expectation expected value of random variable X given Y E(X | Y=2) = 5
var(X) variance variance of random variable X var(X) = 4
σ2 variance variance of population values σ2 = 4
std(X) standard deviation standard deviation of random variable X std(X) = 2
σX standard deviation standard deviation value of random variable X σX = 2
median middle value of random variable x
cov(X,Y) covariance covariance of random variables X and Y cov(X,Y) = 4
corr(X,Y) correlation correlation of random variables X and Y corr(X,Y) = 0.6
ρX,Y correlation correlation of random variables X and Y ρX,Y = 0.6
∑ summation summation – sum of all values in range of series
∑∑ double summation double summation
Mo mode value that occurs most frequently in population
MR mid-range MR = (xmax+xmin)/2
Md sample median half the population is below this value
Q1 lower / first quartile 25% of population are below this value
Q2 median / second quartile 50% of population are below this value = median of samples
Q3 upper / third quartile 75% of population are below this value
x sample mean average / arithmetic mean x = (2+5+9) / 3 = 5.333
s 2 sample variance population samples variance estimator s 2 = 4
s sample standard deviation population samples standard deviation estimator s = 2
zx standard score zx = (x-x) / sx
X ~ distribution of X distribution of random variable X X ~ N(0,3)
N(μ,σ2) normal distribution gaussian distribution X ~ N(0,3)
U(a,b) uniform distribution equal probability in range a,b X ~ U(0,3)
exp(λ) exponential distribution f (x) = λe-λx , x≥0
gamma(c, λ) gamma distribution f (x) = λ c xc-1e-λx / Γ(c), x≥0
χ 2(k) chi-square distribution f (x) = xk/2-1e-x/2 / ( 2k/2 Γ(k/2) )
F (k1, k2) F distribution
Bin(n,p) binomial distribution f (k) = nCk pk(1-p)n-k
Poisson(λ) Poisson distribution f (k) = λke-λ / k!
Geom(p) geometric distribution f (k) = p(1-p) k
HG(N,K,n) hyper-geometric distribution
Bern(p) Bernoulli distribution


COMBINATORICS SYMBOLS

Symbol Symbol Name Meaning / definition Example
n! factorial n! = 1⋅2⋅3⋅…⋅n 5! = 1⋅2⋅3⋅4⋅5 = 120
nPk permutation _{n}P_{k}=\frac{n!}{(n-k)!} 5P3 = 5! / (5-3)! = 60
nCk

combination _{n}C_{k}=\binom{n}{k}=\frac{n!}{k!(n-k)!} 5C3 = 5!/[3!(5-3)!]=10


SET THEORY SYMBOLS

Symbol Symbol Name Meaning / definition Example
{ } set a collection of elements A = {3,7,9,14},
B = {9,14,28}
A ∩ B intersection objects that belong to set A and set B A ∩ B = {9,14}
A ∪ B union objects that belong to set A or set B A ∪ B = {3,7,9,14,28}
A ⊆ B subset A is a subset of B. set A is included in set B. {9,14,28} ⊆ {9,14,28}
A ⊂ B proper subset / strict subset A is a subset of B, but A is not equal to B. {9,14} ⊂ {9,14,28}
A ⊄ B not subset set A is not a subset of set B {9,66} ⊄ {9,14,28}
A ⊇ B superset A is a superset of B. set A includes set B {9,14,28} ⊇ {9,14,28}
A ⊃ B proper superset / strict superset A is a superset of B, but B is not equal to A. {9,14,28} ⊃ {9,14}
A ⊅ B not superset set A is not a superset of set B {9,14,28} ⊅ {9,66}
2A power set all subsets of A
\mathcal{P}(A) power set all subsets of A
A = B equality both sets have the same members A={3,9,14},
B={3,9,14},
A=B
Ac complement all the objects that do not belong to set A
A \ B relative complement objects that belong to A and not to B A = {3,9,14},
B = {1,2,3},
A-B = {9,14}
A – B relative complement objects that belong to A and not to B A = {3,9,14},
B = {1,2,3},
A-B = {9,14}
A ∆ B symmetric difference objects that belong to A or B but not to their intersection A = {3,9,14},
B = {1,2,3},
A ∆ B = {1,2,9,14}
A ⊖ B symmetric difference objects that belong to A or B but not to their intersection A = {3,9,14},
B = {1,2,3},
A ⊖ B = {1,2,9,14}
a∈A element of,
belongs to set membership A={3,9,14}, 3 ∈ A
x∉A not element of no set membership A={3,9,14}, 1 ∉ A
(a,b) ordered pair collection of 2 elements
A×B cartesian product set of all ordered pairs from A and B
|A| cardinality the number of elements of set A A={3,9,14}, |A|=3
#A cardinality the number of elements of set A A={3,9,14}, #A=3
aleph-null infinite cardinality of natural numbers set
aleph-one cardinality of countable ordinal numbers set
Ø empty set Ø = { } C = {Ø}
\mathbb{U} universal set set of all possible values
\mathbb{N}0 natural numbers / whole numbers set (with zero) \mathbb{N}0 = {0,1,2,3,4,…} 0 ∈ \mathbb{N}0
\mathbb{N}1 natural numbers / whole numbers set (without zero) \mathbb{N}1 = {1,2,3,4,5,…} 6 ∈ \mathbb{N}1
\mathbb{Z} integer numbers set \mathbb{Z} = {…-3,-2,-1,0,1,2,3,…} -6 ∈ \mathbb{Z}
\mathbb{Q} rational numbers set \mathbb{Q} = {x | x=a/b, a,b∈\mathbb{Z}} 2/6 ∈ \mathbb{Q}
\mathbb{R} real numbers set \mathbb{R} = {x | -∞ < x <∞} 6.343434∈\mathbb{R}
\mathbb{C} complex numbers set \mathbb{C} = {z | z=a+bi, -∞<a<∞, -∞<b<∞} 6+2i ∈ \mathbb{C}

LOGIC SYMBOLS
Symbol Symbol Name Meaning / definition Example
⋅ and and x ⋅ y
^ caret / circumflex and x ^ y
& ampersand and x & y
+ plus or x + y
∨ reversed caret or x ∨ y
| vertical line or x | y
x’ single quote not – negation x’
x bar not – negation x
¬ not not – negation ¬ x
! exclamation mark not – negation ! x
⊕ circled plus / oplus exclusive or – xor x ⊕ y
~ tilde negation ~ x
⇒ implies
⇔ equivalent if and only if (iff)
↔ equivalent if and only if (iff)
∀ for all
∃ there exists
∄ there does not exists
∴ therefore
∵ because / since


CALCULUS & ANALYSIS SYMBOLS

Symbol Symbol Name Meaning / definition Example
\lim_{x\to x0}f(x) limit limit value of a function
ε epsilon represents a very small number, near zero ε → 0
e e constant / Euler’s number e = 2.718281828… e = lim (1+1/x)x , x→∞
y ‘ derivative derivative – Lagrange’s notation (3×3)’ = 9×2
y ” second derivative derivative of derivative (3×3)” = 18x
y(n) nth derivative n times derivation (3×3)(3) = 18
\frac{dy}{dx} derivative derivative – Leibniz’s notation d(3×3)/dx = 9×2
\frac{d^2y}{dx^2} second derivative derivative of derivative d2(3×3)/dx2 = 18x
\frac{d^ny}{dx^n} nth derivative n times derivation
\dot{y} time derivative derivative by time – Newton’s notation
time second derivative derivative of derivative
Dx y derivative derivative – Euler’s notation
Dx2y second derivative derivative of derivative
\frac{\partial f(x,y)}{\partial x} partial derivative ∂(x2+y2)/∂x = 2x
∫ integral opposite to derivation ∫ f(x)dx
∫∫ double integral integration of function of 2 variables ∫∫ f(x,y)dxdy
∫∫∫ triple integral integration of function of 3 variables ∫∫∫ f(x,y,z)dxdydz
∮ closed contour / line integral
∯ closed surface integral
∰ closed volume integral
[a,b] closed interval [a,b] = {x | a ≤ x ≤ b}
(a,b) open interval (a,b) = {x | a < x < b}
i imaginary unit i ≡ √-1 z = 3 + 2i
z* complex conjugate z = a+bi → z*=a-bi z* = 3 – 2i
z complex conjugate z = a+bi → z = a-bi z = 3 – 2i
∇ nabla / del gradient / divergence operator ∇f (x,y,z)
vector
unit vector
x * y convolution y(t) = x(t) * h(t)
Laplace transform F(s) = {f (t)}
Fourier transform X(ω) = {f (t)}
δ delta function
∞ lemniscate infinity symbol


NUMERAL SYMBOLS

Name Western Arabic Roman Eastern Arabic Hebrew
zero 0 ٠
one 1 I ١ א
two 2 II ٢ ב
three 3 III ٣ ג
four 4 IV ٤ ד
five 5 V ٥ ה
six 6 VI ٦ ו
seven 7 VII ٧ ז
eight 8 VIII ٨ ח
nine 9 IX ٩ ט
ten 10 X ١٠ י
eleven 11 XI ١١ יא
twelve 12 XII ١٢ יב
thirteen 13 XIII ١٣ יג
fourteen 14 XIV ١٤ יד
fifteen 15 XV ١٥ טו
sixteen 16 XVI ١٦ טז
seventeen 17 XVII ١٧ יז
eighteen 18 XVIII ١٨ יח
nineteen 19 XIX ١٩ יט
twenty 20 XX ٢٠ כ
thirty 30 XXX ٣٠ ל
forty 40 XL ٤٠ מ
fifty 50 L ٥٠ נ
sixty 60 LX ٦٠ ס
seventy 70 LXX ٧٠ ע
eighty 80 LXXX ٨٠ פ
ninety 90 XC ٩٠ צ
one hundred 100 C ١٠٠ ק


GREEK ALPHABET LETTERS

Upper Case Letter Lower Case Letter Greek Letter Name English Equivalent Letter Name Pronounce
Α α Alpha a al-fa
Β β Beta b be-ta
Γ γ Gamma g ga-ma
Δ δ Delta d del-ta
Ε ε Epsilon e ep-si-lon
Ζ ζ Zeta z ze-ta
Η η Eta h eh-ta
Θ θ Theta th te-ta
Ι ι Iota i io-ta
Κ κ Kappa k ka-pa
Λ λ Lambda l lam-da
Μ μ Mu m m-yoo
Ν ν Nu n noo
Ξ ξ Xi x x-ee
Ο ο Omicron o o-mee-c-ron
Π π Pi p pa-yee
Ρ ρ Rho r row
Σ σ Sigma s sig-ma
Τ τ Tau t ta-oo
Υ υ Upsilon u oo-psi-lon
Φ φ Phi ph f-ee
Χ χ Chi ch kh-ee
Ψ ψ Psi ps p-see
Ω ω Omega o o-me-ga


ROMAN NUMERALS

Number   Roman numeral
0 not defined
1 I
2 II
3 III
4 IV
5 V
6 VI
7 VII
8 VIII
9 IX
10 X
11 XI
12 XII
13 XIII
14 XIV
15 XV
16 XVI
17 XVII
18 XVIII
19 XIX
20 XX
30 XXX
40 XL
50 L
60 LX
70 LXX
80 LXXX
90 XC
100 C
200 CC
300 CCC
400 CD
500 D
600 DC
700 DCC
800 DCCC
900 CM
1000 M
5000 V
10000 X
50000 L
100000 C
500000 D
1000000 M

 

22 responses to “About

  1. steve

    Just found you’re blog. Bravo!
    I especially enjoy seeing the balance of “design first then fab” vs “fab and figure it out”. You’ve been bookmarked

  2. I’m looking for some interesting projects and makers to feature on maker2maker.com, please check us out and drop us an email via the site if you would be interested 🙂

  3. Dear Sir/Madam

    The Design and Technology Association is developing a resource for UK secondary D&T students on Systems & Control, including the uses and options available, and would like to feature an image from your website in a PowerPoint presentation for students.

    We would appreciate it if you are able to allow the image’s use. We will of course acknowledge the source with a weblink? The link is to https://ctmprojectsblog.wordpress.com/2013/07/page/2/

    Would you please let me know if this is acceptable.

    The D&T Association is an educational charity that promotes design and technology and provides teaching resources for its members and others.

    I look forward to hearing from you. Please contact us at info@data.org.uk

    Kind Regards
    Jacqui Eborall

  4. Interesting Charles! I appreciate your help. The world needs more people like you =)

    • Keeps me up-to-date with SolidWorks CAD Software features when I am spending a lot of time in the Workshop… Gives me a reason to come in early and work on some CAD designs for people to help them express their 3D-Printing ideas. Within just a few more years, much of manufacturing will be done with some form of Additives manufacturing … Metals, Concrete, Plastics, etc… and I feel most engineers and designers should start familiarizing themselves now with some form of 3D-Printing to prepare for the future. Thank You for the Note. CHEERS!!

  5. Tom

    Awesome blog! Found it while looking at my RC crawler wondering if 3D printed parts would be strong enough, knew someone had to have done it. Thinking SLS nylon may be strong enough for a 1/10 scale crawler frame, might have to try it out. What program do you use for your renders? I am fortunate enough to be proficient in Solidworks but unfortunately am not as good at metal fab as you are so most of my designs remain on the computer. And am yet to learn proper rendering and tend to just use the Solidworks renderer with pre made materials which doesn’t come out great.

    Also love the iPhone submarine!

    Cheers.

    • Sorry it took so long to respond I have been busy building Metal items. I use SolidWorks PhotoView-360 to Create the Renderings and .GIFs … Jim Frye is selling these 3D-Printed Crawler chassis online and he has re-designed the crawler even better using his knowledge of Micro-Crawlers and Robotics. One night when I could not sleep I took some 2D-Drawings of Jim’s and came up with the 3D SolidWorks Concept model for the R1-Crawler that is now called the GOAT. I am not sure the web address for Jim’s sales but if you find it let me know. CHEERS!!!

  6. Stan

    any more info on the go pro sub? I’d like to explore the idea of using one to study underwater behavior of dolphins.

  7. Pingback: 3D-Printed Bluetooth Wireless DRO | CTM Projects

  8. Gnanabharathi

    Hello Sir I want your “small workshop lift table” design part and its report for my study purpose. Kindly send me that report as soon as possible

  9. Ian

    Very interesting blog about your powder coating ‘box’. Maybe I have not seen the relevant page on your blog – but I was wondering what spec your computer is for running SW ?

  10. Lupe Garcia

    Hello,

    looking to build a silk screen print. Noticed your post. Do you have any detailed plans?

    Thank you

    • I did it a while back but I can check so see if I have the plans on a back-up computer drive … Let me know if you are still interested, just noticed you note today a month later 🙂

  11. Hey! I’m Brook, CEO of Printrbot. You obviously have skills. I love the little rendering of the sub thing 😉 and the micro rock crawler. Always wanted to do an open source 3d printed one. what do you do for a living? Do you release any open source projects? I’m always looking to promote pet projects from the 3d printing community at large.

    All my best,
    Brook

  12. Kevin

    Would you create another set of aluminum handles for drill press and sell? I have looked around and think I have run into similar issues of finding a replacement that will last. Mine are a 3/8″-16 thread and will need three.
    Thanks!

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s