Newbie- Kerk Leadscrews for JGRO

[rvoh1]

During my investigating on leadscrews for the JGRO router I am building, someone recommended going to Kerk Motion for my leadscrews. I believe a 3/4" dia was recommended. Does anyone out there agree, and if so, what pitch would you recommend if I was planning on using my machine to carve wood signs. Also, what size stepper motors would do the trick. As everyone one else is trying to do, I am looking for increases accuracy and speed. Thanks for any help.

[TommieK]

Hello rvoh1, I beleive that if you build the JGRO using 3/4 inch lead screw and motors large enough to turn them at the speeds they would be capable of turning, the machine would shake itself apart in a very short amount of time. Trying not to discourage you, the JGRO is a fun little machine that if built within its own specs can give you possibly years of fun and accurate cuts. It seems to me that the people who upgrade their machine eventually build a second and third and who knows maybe even a fourth and fifth machine, each time a tighter smoother more accurate machine using better and more sophisticated drive and bearing components and better programs to make it all come together. I, personnally, found that building the machine to original specs was not just fun but a very important part of the learning curve. I am currently upgrading my machine because i felt as though the machine had a few weak areas that could possibly use a little reinforcing and like almost everyone else, think it could go just a little faster. I don't know if I answered your question or not but good luck with your build. Oh, and post a lot of pictures of your machine as it progresses, it is so much easier to get feedback if people can see the area of interest. Good luck Tom

[ger21]

Save yourself some money and get some 1/2-8 2 start acme with dumpster nuts. Or get the screws from Roton and get their nuts.
http://www.roton.com/Mating_Componen...family=7060404

[rvoh1]

Thank you all for your valuable input. I still have not decided which way to go on the leadscrew, but all of your input definitely helps. I can't wait unitl everything falls together. That's when I will really need the help, as electronics is not very high on my resume. I've tinkered in the past, but nothing as this level. Thanks for your encouragement and stay active in the forum as I and many others will need the support of those who went through this.

Ron