¶ Aluminum
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The PrintNC is mainly built on steel tubes. However, there's some aluminum parts that are used in several places :
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¶ Angle part
This part will be linked to a HGW20CC carriage, moving along the bottom rail on the X gantry. It's also bolted to the Z plate.
By default, it's a 6mm thick corner plate. Its dimension are dependent of your steel tube dimension : the angle will have the “long” side equal to your tube width and the “short” side equal to your tube height. For example, if you have entered a 80mm x 50mm steel tube in the parameters, the angle will be a 80mm by 50mm corner.
You can change this parameters if you want. For that, update the Fusion parameters angleLong and angleShort.
¶ Internal corner radius problem
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Aluminum corners can be find in two common alloys :
For standard build ( 50x75mm and 2x3" builds), the angle aluminum part will have just enough space to accept the bottom X gantry carriage, which will sit exactly in the corner. As a result, it is highly recommend to get a 6063 aluminum corner, as it'll allow to mount the carriage without any problem. If a 6061 aluminum corner is bought, the internal corner radius will prevent you to mount the carriage correctly. You can still buy one, but you'll have to manually file or grind the inside radius away, in order to ensure a proper installation of the carriage. This problem is doesn't exist for bigger steel tubes, as the plate will be wider as well, allowing to mount the carriage away from the internal corner. |
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