6 tpi or 10 tpi?

[GPZ_Rider]

[QUOTE=NC Cams]If you're going to do Imperial machining, definitely use 10 TPI or 20 TPI. Why? Do the math.
QUOTE]

So the bottom line is there is really no "One" reason to use or not to use any particular thread.

As I prefer to work in metric and as .02 of a mm is acurate enough for my purposes then there is no reason not to go with the TR18x4.

Thanks guys for the input... Will order it up this morning.

Cheers Mark

[dertsap]

i use 6 tpi primarily to gain the extra speed any amount of torque loss is too small to say there is any , with 6 tpi your nearly doubling the speed as to running 10tpi , for a cnc router to cut wood what do you need for accuracy , i m going to be connecting geckos , the resolution is going to be .00008 , my last driver which was full step gave me a resolution .0008 which is plenty in my eyes ,and it ran very well , personally i see it as being a waiste of motor energy to run at a higher tpi

[GPZ_Rider]

Just ordered 1.8 m of TR14x4 and 1.8m of TR18x4 from Motion Technologies. $138 AU for the lot, will be here by the end of the week.... This Should give me plenty to experiment with.

[Agro]

Let me know your findings, I may follow with the 6TPI.

Oh - and you can get the 200oz/in bipolar steppers for approx $80 new from advanced automation in Sydney and Ocean Controls in melbourne to name two. It seems most automation shops can get them in and the price is comparable to the US given currency exchange and freight.

Agro.

[GPZ_Rider]

Hi Agro...

Thanks for that mate, mentioned cheap steppers to the guy from motion tech and he quoted me min $180... pretty much the story from all round the country..... Have the 4 190's comming with the board and other electronics so am not stuck yet.

Ordered pretty much everything now, cleaned and greased the lathe, swept the floor, must be BUILD TIME !!!..

Cheers Mark

[GPZ_Rider]

Trapazoidal just arrived at my work!!! WAHOO... only problem is I cant knock off and go home now !!!!

The Adventure begins.