Newbie- hello, little help

[sandmansigns]

Hi I'm new to cnc all around, had an idea that i could build a 3x3 table fitted with a dremel to do small wood projects. So I purchased a 3 axis kit from probotix, downloaded auto cad, and mach3, I also have corel draw 12 and x4, as well as flexi8.5, and signgo pro. the last four are for my small sign shop i use to do stickers and sand blasted signs. So if any body can guide me in general direction to keep from fowling things up, i would greatly appreciate it. thanks. direct email is sandmansigns@yahoo.com

[TOTALLYRC]

Originally Posted by sandmansigns Hi I'm new to cnc all around, had an idea that i could build a 3x3 table fitted with a dremel to do small wood projects. So I purchased a 3 axis kit from probotix, downloaded auto cad, and mach3, I also have corel draw 12 and x4, as well as flexi8.5, and signgo pro. the last four are for my small sign shop i use to do stickers and sand blasted signs. So if any body can guide me in general direction to keep from fowling things up, i would greatly appreciate it. thanks. direct email is sandmansigns@yahoo.com

it sounds like you are on the right track as far as sotware is concerned. If coreldraw can output dxf you are way ahead of the game. All you will need is a cam program to convert to g-code.

You are already having problems with fouling, not fowling.

What are you going to do as far as the mechanical part of the machine?

Mike

[ginotortelli]

Just a question and an idea.

First the question...Why not build a 4' X 4' machine? Most sheet goods come in 4' widths. This gives you the ability to work with half sheets with only one cut for the length. There are MANY plans out there for 4' by 4' machines that would require no modifications.

Here's the idea....When I built my table-top machine, I avoided the Dremel idea. Dremel bits can be expensive and a Dremel-type motor is not very powerful. I modified the plans and installed a trim router. I also installed a router speed control. With that, I never have a power problem and I can use 1/4" shaft bits that hold up better and, in most cases, are cheaper. They are also available from companies like Amana. They make some great router bits. Their quality makes them last a long time.

I have just invested in some new CAM software that accepts DXF files (among others). Check out Vectric software. I downloaded their demos and was immediately able to use them on my table-top machine using Mach 3. Then I was able to produce G-Code that ran perfectly on my Shop Sabre table. The cuts are smooth and the learning curve is almost non-existent. I have Visual Mill and BobCAD/CAM. Both are difficult for me to run. This new Vectric software is giving me 2D and 3D results that are phenomenal. I purchased their 2D and 3D packages for a total of about $400.00. The 3D package even allows you to machine "slices". With that feature, your only Z-Axis limitation is the number of slices you are willing to glue together. One other thing that I forgot to mention is that you can download all of their tutorials and do everything but produce G-Code from your own drawings BEFORE you spend a cent! Then, unless you want a CD, you can pay online and they send you the registration code within a few hours. No waiting for the mail.

Sounds like you're on the right track. Best of luck.

[sandmansigns]

Sorry for my late reply I work rotating shifts, it sucks. As far as the moving the axis I am going to use screws and acme nuts. The frame out of 80/20 (cool stuff).

[sandmansigns]

Thanks alot I will use your idea if you do not mind, So really thanks.

[BobF]

Look at Joes 4x4. Its made using 8020 and is a great design.
http://www.cnczone.com/forums/showthread.php?t=38220

I would recommend a router instead of a dremel. I also like Vectric software.
Ask lots of questions and you will get lots of answers.