HIMNL9
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Re: My holiday project 
@ things: don't forgot to cool the lens too ..... have you already tried if the plastic parts can hold the heat from the lens without deformations ?
@anselm: you just need to have 2 moving mirrors (and they are moving just cause they slide with the carriages, not as a scanner) ..... one on a side of the carriage, that turn the beam 90 degrees, from the tube to the lens, and the other solidal with the lens, that turn the beam again 90 degrees from the side of the carriage to the bottom ..... til the beams are parallel with the moving axis, no need to have other mirrors (ok, maybe one for turn the beam if the tube is not already parallel with one of the axis, but this one is fixed with the tube)
@ things: don't forgot to cool the lens too ..... have you already tried if the plastic parts can hold the heat from the lens without deformations ?
@anselm: you just need to have 2 moving mirrors (and they are moving just cause they slide with the carriages, not as a scanner) ..... one on a side of the carriage, that turn the beam 90 degrees, from the tube to the lens, and the other solidal with the lens, that turn the beam again 90 degrees from the side of the carriage to the bottom ..... til the beams are parallel with the moving axis, no need to have other mirrors (ok, maybe one for turn the beam if the tube is not already parallel with one of the axis, but this one is fixed with the tube)
