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hobby router made by
Fotis Zachos
Here is a few pictures of my new engraving-plotting machine.
It's almost ready and now i am making the first test of the driving system.
This is the second machine i made.
The first was biger and maded in a Techical School with the aid of the Students. For this machine we took the first prise in a school competition.
The second machine i describe, is smaller, (apout 200mmx300mm) but with the same filosophy: One side guidance and driving.
I prefer this method of guidance because of the simplisity, low cost and easy alighnment.
For driving system I am trying the direct driving from 1/4" shaft of the stepper motor with the aid of a steel guitar chord, since there is 6.35*πp=19,949 almost 20 mm. Perfect ratio for a small machine.
Until now the results are very good (precision and friction),and now I am trying to see the endurance of the steel chords (0.2 mm).
Have any beter idea for the material I should use?
All the construction are made from surplus i.e. componets which i had already, but i think the total cost of the mechaniks is low.
The electronics are maden from Hans Wed,s pcb, constructed and assempled by me.
Best regards
Fotis Zachos.
Electrical Engineer NTUA Athens.
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