1/4″-20 threaded screw used for photography equipment. This is meant to be 3D printed as replacement for metal screws for non vital usage. Do not trust these to carry heavy and expensive equipment.
Four types are available. Slight differences are in dimensions and shape of handle wheels.
https://www.printables.com/model/248002-14-20-nut-screw-for-photo-camera-mount
https://www.thingiverse.com/thing:5441548 […]
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I needed 3D model of aluminum profile 15180 used for CNC 3018. As I could not find it, I had to make model myself. Dimensions: 15 x 180 x 300 mm.
It is based on this drawing:
I made it available for others, if they need it.
https://www.thingiverse.com/thing:4606478
https://www.prusaprinters.org/prints/41542-aluminum-profile-15180×300-cnc-3018 […]
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Deciding what milling parameters to use can be tricky task, especially for less experienced people like me. Most of the information regarding CNC milling are related to professional equipment and may be quite detailed, hard to follow and not quite applicable to hobby machines. When you use small hobby machine, you are usually on your own. While investigated this I gathered some info that may be useful for others too, so I am sharing it.
The most simple way to deal with setting milling parameters is targeting optimal chip load. Chips are particles of material that milling tool cuts from the body of the material. […]
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I stumbled upon model for bolt and nut with knurled interface https://www.thingiverse.com/thing:9095 . I liked how it looks so I decided to adjust nut model and make it to become hand wheels knob for my CNC 3018 X and Z axis. It turned out pretty good.
Knob radius is 24 mm and thickness is 10 mm. It is meant to be used on 8 mm lead screw so it has 8.1 mm hole which is big enough that knob tightly sits on leading screw so it can easily turn leading screw.
There are holes for 3 mm screws if there is need to additionally secure knob on the lead screw.
I needed stand for my DS212 oscilloscope. All I could find were too bulky, so I decided to design one. I posted it at https://www.thingiverse.com/thing:4347186
It is very small stand for DS212, DS02 or similar size oscilloscope or some other device. Part dimensions are 35 x 5 x 10 mm so it easy fits in any box or bag you use to carry osciloscope around.
Although You may use single stand it is more stable and practical to use two of them. Stand is tight enough to keep attached on device even if you lift it up.
Display is kept at 45 degree toward device user which is comfortable.
Hobby CNC machines are usually based on Arduino/Woodpecker CNC controllers with cheap motor drivers and 775 spindle motors. Motors are specified to run on 36V but CNC machines usually run it on 24V. That means motors run on slower speed than what they can do. Some controllers are able to run 36V but 24V power supplied are delivered with them. Newer Woodpecker CNC controllers are specified to run on 24V only.
Some specifications claim that 775 motor used for spindle runs at 3000-6000 rpm when powered at 24V and gets up to 9000 when powered at 36V. I wanted to run spindle at maximum possible speed for better milling results. […]
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