Friday 29 November 2013
A collection of novel stuff
Rubik's Cube cake (home-made)
(Near) spherical cactus
Artificial chicken
Wednesday 27 November 2013
High Speed Spindle for Milling Machine
Low spindle speeds are the bane of a home-shop machinist. Typical milling machine spindle speeds rarely exceed 2000 rpm for heavy duty geared machines. The top speed for my mill is 1250 rpm, which is great for boring large holes or facing big pieces of steel, but to machine a piece of aluminium at the typical 300 sfm requires a 20mm diameter cutter!
The spindle speeds are typically increased by changing the gearing / belt ratios, adding a "spindle speeder" (see below) or attaching an auxiliary spindle. A collection of good ideas can be found at CNC Cookbook. (The blog is also a great read).
I propose to modify my mill to have a high-speed spindle in a slightly unconventional way...
The spindle speeds are typically increased by changing the gearing / belt ratios, adding a "spindle speeder" (see below) or attaching an auxiliary spindle. A collection of good ideas can be found at CNC Cookbook. (The blog is also a great read).
I propose to modify my mill to have a high-speed spindle in a slightly unconventional way...
Monday 25 November 2013
1 hour Robot
Presenting ... The 1-hour robot, made using some HobbyKing and eBay parts.
1 hour of building time yielded many hours of great fun!
1 hour of building time yielded many hours of great fun!
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