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Polar Plotter
A polar plotter also known as polargraph or Kritzler is a plotter which uses two-center bipolar coordinates to produce vector drawings using a pen suspended from strings connected to two pulleys at the top of the plotting surface. This gives it two degrees of freedom and allows it to scale to fairly large drawings simply by moving the motors further apart and using longer strings. Some polar plotters will integrate a raising mechanism for the pen which allows lines to be broken while drawing. The system has been used by a number of artists and makers, including: * Jürg Lehni & Uli Franke (2002) * Ben Leduc-Mills (2010) * Alex Weber (2011) * Harvey Moon * Sandy Nobel (2012) * Maslow CNC References {{Reflist External links Polargraph Drawing MachineDer Kritzlerpolargraph.co.ukMelt (Open Source Polargraph Controller) Plotters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polargraph Gosper Curve
A polar plotter also known as polargraph or Kritzler is a plotter which uses two-center bipolar coordinates to produce vector drawings using a pen suspended from strings connected to two pulleys at the top of the plotting surface. This gives it two degrees of freedom and allows it to scale to fairly large drawings simply by moving the motors further apart and using longer strings. Some polar plotters will integrate a raising mechanism for the pen which allows lines to be broken while drawing. The system has been used by a number of artists and maker culture, makers, including: * Jürg Lehni & Uli Franke (2002) * Ben Leduc-Mills (2010) * Alex Weber (2011) * Harvey Moon * Sandy Nobel (2012) *Maslow CNC References {{Reflist External links Polargraph Drawing MachineDer Kritzlerpolargraph.co.ukMelt (Open Source Polargraph Controller) Plotters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plotter
A plotter is a machine that produces vector graphics drawings. Plotters draw lines on paper using a pen, or in some applications, use a knife to cut a material like vinyl or leather. In the latter case, they are sometimes known as a cutting plotter. In the past, plotters were used in applications such as computer-aided design, as they were able to produce line drawings much faster and of a higher quality than contemporary conventional printers. Smaller desktop plotters were often used for business graphics. Printers with graphics capabilities took away some of the market by the early 1980s, and the introduction of laser printers in the mid-1980s largely eliminated the use of plotters from most roles. Plotters retained a niche for producing very large drawings for many years, but have now largely been replaced by wide-format conventional printers. Cutting plotters remain in use in a number of industries. Overview Digitally controlled plotters evolved from earlier fully analog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two-center Bipolar Coordinates
In mathematics, two-center bipolar coordinates is a coordinate system based on two coordinates which give distances from two fixed centers c_1 and c_2. This system is very useful in some scientific applications (e.g. calculating the electric field of a dipole on a plane). Transformation to Cartesian coordinates When the centers are at (+a, 0) and (-a, 0), the transformation to Cartesian coordinates (x, y) from two-center bipolar coordinates (r_1, r_2) is :x = \frac :y = \pm \frac\sqrt Transformation to polar coordinates When ''x'' > 0, the transformation to polar coordinates from two-center bipolar coordinates is :r = \sqrt :\theta = \arctan\left( \frac \right) where 2 a is the distance between the poles (coordinate system centers). See also * Bipolar coordinates *Biangular coordinates *Lemniscate of Bernoulli *Oval of Cassini *Cartesian oval In geometry, a Cartesian oval is a plane curve consisting of points that have the same linear combination of distances from two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maker Culture
The maker culture is a contemporary subculture representing a technology-based extension of DIY culture that intersects with hardware-oriented parts of hacker culture and revels in the creation of new devices as well as tinkering with existing ones. The maker culture in general supports open-source hardware. Typical interests enjoyed by the maker culture include engineering-oriented pursuits such as electronics, robotics, 3-D printing, and the use of computer numeric control tools, as well as more traditional activities such as metalworking, woodworking, and, mainly, its predecessor, traditional arts and crafts. The subculture stresses a cut-and-paste approach to standardized hobbyist technologies, and encourages cookbook re-use of designs published on websites and maker-oriented publications. There is a strong focus on using and learning practical skills and applying them to reference designs. There is also growing work on equity and the maker culture. Philosophical emphasis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maslow CNC
Maslow CNC is an open-source CNC router project. It is the only commercially available vertical CNC router and is notable for its low cost of US$500. Although the kit is advertised at $500, like many tools, additional initial material and hardware costs are required. The kits are now sold by three re-sellers range in price from $400 to $500. Lumber and plywood are required to make the machine's frame along with an appropriate and compatible router. Lastly, a personal computer or tablet is needed with Windows, Mac OSX or Linux as its operating system. Overall initial material material costs approximately $800. The unique vertical design mimics a hanging plotter allowing it to have a 4' x 8' cutting area with a footprint 10' wide x 19" deep. Maslow CNC uses geared motors with encoders (8148 counts/rev) and a closed loop feedback system to achieve a resolution of ±0.4mm. To reduce cost, Maslow CNC comes in kit form, uses a commercial off-the-shelf handheld router provided by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
