Jkauppafi

frame-only board games, with hexagon tile frame. Could be also used as foam piece hanger for sound deadening panel.

Standard simple set of board game pieces, to be used in the light weight board game frame. Injection molded, 3d printed, cnc/laser engraving compatible.

Water liquid evaporation gaseous phase transformation based vacuum chamber, partial or full vacuum, low pressure cooling liquid will not fill back the vacuum but stay liquid, and separated in bottom chamber with valve.

Standard simple set of board game pieces, to be used in the light weight board game frame. Injection molded, 3d printed, cnc/laser engraving compatible.

frame-only board games with square tile frame. Could be also used as foam piece hanger for sound deadening panel.

Extended metal sheet dimensions and added some support holes.

Plastic cylinder with reloadable metal pipe electrode, separator, carbon felt and graphite rod core, metal pipe touches the bottom metal plate and graphite rod is the top contact, with some carbon felt to let the fuel cell exchange air, and add the electrolyte. Designed to be used upright but can be possibly used in any orientation, because electrolyte liquid does not escape from the separator and carbon felt, but is infused in the salt bridge. Majority of the fuel cell weight is the metal pipe, from 80% up, other materials are plastic and carbon felt/graphite, which are many times lighter than the metal in same volume, especially iron. Specific energy rating is 80-95% close to the metal energy density, from 1.3kWh/kg of zinc to 9.0kWh/kg of silicon. Fast swap of the metal-pipe electrode after full consumption, swap out the powder dust metal oxide and insert a new metal pipe, such as zinc, iron, tin, aluminium, magnesium, silicon pipe, even copper metal electrode provides some electricity in pure ethanol-koh electrolyte, aluminium is not compatible with aluminium metal electrode in water-koh electrolyte for hydrogen evolution. Ethanol/water-KOH electrolyte is recommended, as NaOH in water will not etch metal oxides enough, also sulfates like magnesium sulfate, iron sulfate or zinc sulfate in water are possible electrolytes. In ethanol-KOH/NaOH electrolyte mixes, potassium/sodium ethoxide in solution will enhance etching-removal of the metal oxides from the electrodes, also providing low temperature compatibility-operation of the aqueous/ethanol fuel cells.

EM-MHD railgun bearing ball launcher, two similar designs.

Includes electric DC MHD hub motor wheels. The seat should be suspended.

Flexible small electric hub DC MHD motor wheel for the mini go kart.

Dual side bearing DC MHD motor, both radial and vertical directions bearing supported, use conductive lubricant like graphite to keep the bearing discs working like a conductive fluid. Low voltage high current motor, like MHD and railgun track accelerators.

Plastic cylinder with reloadable metal pipe electrode, separator, carbon felt and graphite rod core, metal pipe touches the bottom metal plate and graphite rod is the top contact, with some carbon felt to let the fuel cell exchange air, and add the electrolyte. Designed to be used upright but can be possibly used in any orientation, because electrolyte liquid does not escape from the separator and carbon felt, but is infused in the salt bridge. Majority of the fuel cell weight is the metal pipe, from 80% up, other materials are plastic and carbon felt/graphite, which are many times lighter than the metal in same volume, especially iron. Specific energy rating is 80-95% close to the metal energy density, from1.3kWh/kg of zinc to 9.0kWh/kg of silicon.

Raised roundabout high way intersection with bypass turns. Temporary 4-to-8-lanes wide diverging/merging section for turning.

Thrust bearing version of the electric MHD motor, voltage and current goes from the inner copper tube to the outer steel sheet, both stationary on the same hub. Only the bottom part contains a vertical aligned magnet, not the top rotor.

Railgun DC linear MHD track with steel bearings, F=ILB and U=vLB, where L is radial track width, of the current flow, from the inner ring plate to outer ring plate. Using the bearing as the brushes makes the motor effectively brushless dc motor, where the bearing is the conductive brushes.

Includes compressed air input/output and radial/thrust bearing, with electric motor-generator with the axial ring magnet. Optional bearing teeth on the inner axle to make the motor as standard two parts engine, without them its a bearings running a vertical thrust bearing axle with +/- radial ring terminals stationary/rigid together.

Steel sheet metal corner attachment pieces.

Horizontal and vertical cube wall oriented camera plane-rays, total 3x sets of plane-rays, to test spherical object bvh on bfs grid intersections, each plane-ray test is dual sided on the cube. Similar to 2.5D scan line rendering but actual 3D rendering simple and fast. Renders cube environmental map of the camera/bounce seen objects. Each side texture of the cubemap can be for example 4096x4096 pixels resolution, that becomes 2x4096 = 8192 combined scan line plane-rays axis, total 3 axis (x,y,z) gives 3x 8192 = 24576 plane rays per bounce to intersect with each grid bvh cell in bread first search closest first order. Somewhat similar to DDA on grid (wolfenstein 3d). The plane-rays for the bounce cubes are always same, rotation stays same, only position changes. Pre-rotated sprite-style 3d mesh vertices can be used with pre-rotated sphere bvh intersection structure. 24k cube map scan line rays is considerably less than 6x16M pixel rays for intersection test for true 3d rendering ray tracing. Standard cube map can be then remapped to 360 degree equilateral camera image or angled projected camera image. This also allows movement of camera even if the rendered cube environment map updates slower than the screen refresh rate.

Zinc/steel and aluminium electrodes.