Acme rod?

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Originally Posted by Labidus Hi, I'm not sure about what is the acme rod vs normal one but you can find cheap ROD 1/2 or 1/4 or 5/8 at Home Depot or Canadian Tire. They are much cheaper compared to the one find online The price by 3 foots is 5/9$.

You will require the acme rod (which is very expensive in Canada) I do have Fastenal trying to search out some for me. I have not yet found a site that has 2 start rod (in Canada). There are several grades as well as classes of rod and nuts.

Good luck on your hunt, please let me know if you find some.

Thanks
John

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http://www.nookindustries.com/acme/AcmeGlossary.cfm

I found them to explain the acme rod quite well.
John

[grahamshere]

Hey Check Twice, go to the roton site , thttp://www.roton.com hey have hilead acme srews there, there not in canada but do ship here, plust thay have the cheaper metal other than stainless which is prity pricey, they also have multi start as well. Graham

[Check twice!]

Originally Posted by grahamshere Hey Check Twice, go to the roton site , thttp://www.roton.com hey have hilead acme srews there, there not in canada but do ship here, plust thay have the cheaper metal other than stainless which is prity pricey, they also have multi start as well. Graham

Thanks Graham

I was looking at some 1/2"x 8 or 10 (have not figured pros and cons of the two) double start and either flanges or "G" class nuts (seems to have the less lead) these are still areas to be explored. I would likely put stainless on the wish list but when reality clicks in it has to fall in the budget.

Thanks for the help and a great site!
John

[grahamshere]

What are you building? router,mill,lathe? Depending on your drivers and motors as well. I read on another forum some one using 10 tpi 5 start and was getting 400 imp rapids with xylotex drivers and motors, not sure how much torque he loses with that set up but dam fast rapids.Graham

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I hope to build a CNC router (JROG), to do engraving mostly and what ever. I am a hobbist and not an engineer. I am fairly handy with the hands and my son the computers (joint venture) so learning. We have a fair workshop and have made several other projects. This is the largest to date, but always liked a challenge.

We were looking at the kits from HobbyCNC driver board and motors, my son said this is what seems to be the common motors used but always open to suggestions. He is away until Sunday but will get the motor sepcs. on his return.

I have used acme from Fastenal for my thickness sander but finding their rod not to be suitable for this project.

Thanks
John

[grahamshere]

The jgro is a good machine for the first, I made the solsylva because of the step by step plans plus lots of pictures lol. Im not sure which lead screws the jgro call for so if there smaller than the 1/2 acme make sure you use the right bearings if you go with 1/2 inch. Hobbycnc is popular with hobby machines, I used the Xylotex because the board was already made, I know if I had to slder all those pieces id blow somthing. When you decide on the screws ask hobbycnc what motors he recomends. I would get a multi start screw for sure, you get more speed plus you will have less whip in your screws. So if you have 10 tpi with 1 start you may get 50 imp but you may run into a bit of whip. But if you have 10 tpi 2 start you can have or better speeds with less whip. Hope this helps. Graham

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I will ask my son when he gets home to check the xylotex, we are also using a motor/board kit. Thanks on the info on single and double start. I have so much to learn. I will take photos as I go along and post as well, I can see the CNCZone communuty will be an excellent resource center.

I thank you for taking the time to chat.
John from Nova Scotia