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Re: How to calculate HTD 5mm Belt Lengths?

Posted: Thu Sep 06, 2012 3:14 pm
by Richard Talbot
Thanks Art,

I suspected there was something like that at play.  One other question - It seems that Gearotic does not support 4D milling of the 5mm HTD?  I can output a spur gear OK, but not the timing pulley.  There is a note there that says only Involute types are supported, but the system names the pulley as an Involute.

All things being equal, I assume the quality of the gear would be better with a 4D machine as there is less deflection in the endmills.  when cutting a gear such as this there is a limit to the length of cut one can make with a 3mm endmill.

Cheers
Richard