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Eixo Z duplo CR 10 com motor de passo unico. Baixo custo, alta precisao.

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Sobre o objeto 3D Eixo Z duplo CR 10 com motor de passo unico. Baixo custo, alta precisao.

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Eixo Z duplo CR 10 com motor de passo unico. Baixo custo, alta precisao. foi projetado para Impressora 3D. The CR10 has a single Z axis leadscrew and I have no issue with this it really produces superb prints. From an engineering point of view a better idea would be to have a leadscrew at both ends. There is an upgrade kit available which uses a second stepper motor but I understand these can get out of sync when power is switched off and on and the bed must be re leveled every time.My solution links the screws with a toothed belt and is driven by the existing single stepper. It cannot get out of sync.All the parts cost less that £12.00 ( US $16.00) including delivery!There is a bit of metalwork involved but you only need a saw. file and drill. If you really cannot do metalwork I have designed a printed bracket with the same dimensions. Be warned though this has not been tried out but it should be OK.Parts needed include600mm leadscrew and nut https://goo.gl/fM8znLGT2 Aluminum timing belt pulley 36 teeth 8mm bore ( 2 required)http://bit.ly/2DXpmchGT2 852mm Timing Belt: https://goo.gl/iXa4sv ( be sure to get the correct length)Flexible Shaft Coupling: https://goo.gl/qfUhEeBearings: https://goo.gl/HnzTqrVideo https://youtu.be/-ASBhJiU8NIInstructions http://myfordboy.blogspot.co.uk/p/the-cr10-has-single-z-axis-leadscrew.htmlBeware of ordering the leadscrew form other than the link given. There are 2 forms of 8mm leadscrew available.One is a 4 start thread that gives a 8mm travel for one turn, the other is single start that would move the nut 2mm per turn.The details are not given very clearly on some sites. I made the mistake and ordered the wrong one to start with.UPDATESome people have said the printed bracket fits and others say the fixing holes are too close together. I have uploaded another file which has a slot so should fit OK.

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