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29 Nov. 2007

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This morning I made the commitment by purchasing the plans which will give me access to Joe's forum. I see where some people have run their machines through 100s of thousands of inches with no complaints of wear on the rails.
On the topic of rails and wear etc, if you use the machine uneavenly like at the ends and just cutting out small bits in one end of the machine the rails will be worn uneavenly. Junk Works10-06-2009, 11:57 PMI'm going to have to get off my lazy bum this winter and finish my CNC Router. Will just have to wait for that stage to come but as I said I would not do anything without the blessing of the Big Man, really this is not a large market item and for the complexity of the castings and machining I doubt there would be much room for a lot of profit compared to a thousand other things that could be made having access to both a wood carving machine and casting. I have read several more threads in the private forum on machining aluminum and all I can say is I am quite impressed.
Thinking about it though it also kind of depends on what your machine is doing when the router goes. Once in the private forum I began to see more possibilities (and I will attest there is very good support there) seeing people are machining aluminum with good results. Finished up the HDPE parts after my sealing job so no more tapping those buggers, kind of watching the paint dry now, next day on the build should make it look like a machine that can do something with the gantry up and at least rolling under human power. I intend on casting all of the HDPE and MDF parts in aluminum after I get the machine up and running so between that and not needing plans building another would be almost half the cost. In the nearer future I can see building a small mill using sturdy aluminum castings, possibly replacing the aluminum castings with iron once I have the mill to do the machine work. Certainly I will be looking to get this machine to making some money to pay for itself and add to my software collection. I am so glad I decided on this machine for my build and blowing the doors off my original budget.
My Y trucks are going to reduce the overall height by about 3" as there will be no part of the machine lower than the vBearings on the X axis, that should be a big gain by itself in terms of stability, combined with the wider wheel stance, the two extrusion gantry and single piece aluminum Ys this is going to move this machine up a class in performance and beg for V rails and a high dollar or maybe even home made spindle to eliminate router runout.
At this point it has been 6 weeks since I ordered the plans and as you mentioned waiting was the biggest part of it all. If you're wondering what kind of DIY CNC to build, you'll want to check out our big collection of DIY CNC articles too! We also have Cookbooks for Feeds and Speeds, G-Code Programming, CNC Manufacturing and Shop Management, and don't forget the CNC Cookbook Blog--with over 2 million visitors a year it's the most popular CNC blog by far on the web.
Difficulty: Close behind cost will be a realistic assessment of the skills you can bring to the table in building your machine.
Let's run down the machine types that are available and comment a little on how they fit with the various questions I asked you to consider. In all likelihood, the simplest and most inexpensive machine to get started with is a 3D Printer. 3D Printers do what's called Additive Machining, because they add material rather than cutting it away. Rack and pinion and skate bearing slide mechanisms have fairly sloppy tolerances, but they're fine for plasma cutting and they're cheap and easy to build. CNC Routers are the CNC machines of choice for woodworkers, and they make an amazing addition to any woodworking shop. DIY CNC Routers can be fabricated from materials ranging from particle board to all-metal construction with precision rails that results in a professional quality machine. A typical CNC Router Tables will have relatively limited Z-travels, so it will be more for parts cut from sheet materials like a plasma table. I've shown some fairly elaborate projects here to give a sense of the tremendous potential having your own CNC Machine can bring. These machines are aimed at wood, plastic, and if you have a well-made rigid machine, soft metals like aluminum.

Almost anything you'd like to make from wood, plastics, or if the table is up to it, soft metal.
Depending on how many corners you cut with the CNC Router, and how elaborate your CNC Mill project is, a CNC Mill is probably the most expensive, hardest to do, but most flexible DIY CNC Machine. Medium to High: This project is best tackled as a conversion of a manual milling machine to CNC. Hi internet As individual who just went through the action of getting their own desktop CNC machine I wanted to write a NO nonsensical HELPF. A homebuilt CNC motorcar using drawer slides and regular hardware store How to physical body group A CNC Router build cnc router On A Shoestring Budget separate The Homemade CNC router Want to build group A hobby CNC. I hope you butt draw about inspiration from my build cnc router wood build and that this instructable bequeath be helpf. An excellent resource and online computer memory for CNC machine kits CNC build cnc router pdf electronics and other CNC related parts Tools that can make almost anything.
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You could build the main frame of our machine with MDF and glue the parts together for an inexpensive alternative.
It doesn't compare to something built for machining metal, obviously, but that's not what it's for. Also, it is possible to adjust for wear, so even if it's annoying to have to take up the play every fifty hours of runtime or whatever, it doesn't necessarily reduce the machine's performance. I am using EMC2 on my hobby machines But I have not test driven the Mach software that seems to be the most popular. I really had to scrape to do this but I think it is going to so worth it in terms of what the machine will do not only for my casting but also the many other things I will be able to use it for. I really dont see building a spindle with a sewing machine motor, those quality router spindles have 3+ HP.
So now I am thinking I can make parts such as the trucks and carriages for my own machine (along with some mods that float through my head to make it even more versatile) to make it even more rigid, do some final machine work on my own castings.
I know that there will be limitations on just how good this machine will be when compared to one dedicated to the specific task but this setup is very flexible and looks to extremely accommodating in terms of adding improvements. I have always wanted to have a full sheet CNC machine since I first came across them years ago with the thought that it could be a nice income earner but the cost of those machines is almost unattainable without diving into debt and starting a real business that may or may not be able to support itself due to the startup costs.
This is the last big purchase and the total is hovering around $3200, more than I had planned but I keep telling myself it is going to be so worth it. I have been thinking of modding in a 4th axis on this as a few have done but the more I think about it I will probably build a dedicated 4 axis machine with a turning length or greater than 4' which would be a hard limit adding it as a mod.
Was a little disappointed with this as I would imagine the plans would have gone through a few revisions correcting such things but they were easily solved. Right now all I have is evaluation copies of solidworks and artcam, the artcam seems difficult at best but the solidworks plays like a song and I am sure I will be proficient in no time. Yesterday one of my brothers came by for a couple hours and just kept smiling and saying that is incredible while having thoughts of his own of things that would come from this machine.
I would like to have the machine running so if there are any interference issues with the limit wiring I am not chasing too many variables.
Adjustment would be with the bolt head in the T slot and it getting bolted to the adjuster followed by two more bolts that will hold it in place in the upper web. I ended up having to bring my desktop out to the shop for the machine so I bought a new one for my desk :) 3ghz P4 with 2GB, that should help me out some with solidworks and I will be bumping the ram up to 4GB as soon as I can afford it.
On one side for a noob it is tough to beat the BOM and the help in joes forum but the plans themselves leave a lot to be desired. Next up is to begin designing the X carraige, I am thinking it will be three pieces though there will possibly be some small cross plate to tie in the bottom of the front and back wheel plates.

In the next day or two I am expecting to receive some really great software for getting this machine to make some oohs and awes.
Youre timeline, plan and implementation all followed a reasonable pace and you clearly dealt with problems and executing their solutions efficiently. As I said before I could trim a lot off this now that I have a machine for making parts and patterns but there are still some hard costs that would be in the $1500 to $2000 range minus computers.
There are some distinct advantages to additive machining in that you can make parts that would be extremely difficult to make with subtractive or conventional machining.
As such, you'll have the cost of the manual machine as well as all the additional CNC parts.
You could go the Gingery way and scrape the stock flat, or borrow somebody's milling machine, if you wanted more accuracy. If those are all eliminated then it is a very different machine, plus with my thoughts on how to construct the castings they would have adjustment built in that is currently done with shims.
The product itself is in preproduction and on its way back to engineering so I am just sticking to plan for now.
The machine will start out with a wooden mount I will make with the bandsaw and that will need to be replaced asap. If things do work out as well as I believe they will I could see setting up a line of flask sizes and selling either the finished flasks or the plates. I say buy the plans to become a part of joes forum and study there for a little while before you begin building. For the time being I am digging into solidcam trying to learn how to turn my solidworks drawings into gcode the machine can understand. A lot of that was staring into space thinking about how to do something or fix something that wasnt working how the plan said it should or setting up a fixture to hold something. Another factor driving increased cost is you will need to purchase CAM software of some type to get full benefit from a CNC Mill. Our plans are in the form of step by step instructions with detailed drawings for each part. The Si makes it pour beautifully but the higher the content the worse it is to machine, makes it kind of brittle from what I understand.
Being a total noob I had no idea of how to set up the mach to control the machine and most of the instruction I found was cryptic at best. I would think that two years into this print there would be a couple of revisions but apparently this is the original plan, some things could be solved by simply making cutouts in the hdpe to accept the conflicts and those that couldnt should be noted.
Affiliated are all the drawings with complete dimensions and specs Hoosier State DIY CNC Router The parts list pdf contains whole the parts and tools. I have built several of these machines, and my experience has been poured into these plans. From vCarve you can upgrade to Aspire for $1450 (regular $1995) so that will be on the todo list as far as machine earnings.
So you want to build a CNC car but you’re not build with balsa wood for kids quite sure what kind of car to soma so this.
Also I was playing with the router speed while it was going and had it too high at one point and burned a couple of holes. Router This relieve http baulk out my website for help and entropy on everything CNC http My freshly blog.
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