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It would be an interesting exercise to have everyone load a given set of G code for a square or whatever and have them cut it on their machine. Measure the end result and publish the results.

That's impressive. At first glance it looks like the base for a CMM. All granite, can't imagine what it originally cost. I would have bought it just to look at. LOL.

I have Tig welded similar assemblies and the issue is not to have any gaps or poor fits. If the bend is accurate enough and will conform to the "brace" with mild clamping to achieve full contact then...

Very Nice. Thanks for the info Goemon.

LOL. About 5 hours with studying each picture and pdf file. I like the concept of bent metal plate gantry. The use of timing belts is interesting as well. Is there an effective controller that will...

Peter may give you better insight on the thickness.

Craigslist will usually have used granite surface plates a couple times a year. A 3 x 4 is usually the moving cost. You might want to call the...

Hi Peter - I just finished binge reading your Maximus build thread over the weekend. I commend you on your time and skill! You certainly answered a lot of my concerns.

Thank you for the info. I'm inclined to purchase cast aluminum jig plate. Not sure if I want or need T slots. May go with a 6 x 6 grid of 3/8-16 threaded holes.

Where did you buy the T-slot table?

Very Nice! Good point on moving the short side on a movable table. I really like that design style, thanks for the photo.
Do you or anyone have a line on a good (reasonably priced) 5 or 7 HP...

No real agenda. I work equally time-wise in metal and wood. So I would design a CNC for aluminum. Most of the stuff will be plates and panels with holes. I could use the CNC for hole layout and...

Now we're talking...

Looks like a fixed gantry moving table design?

On you tube 'This Old Tony' made a nice one. I believe his is around 36" x 36" there about. With a Z travel around 6" - 8"....

Anything is possible with time and patience I guess. Mad Vac definitely had both. Precision ball screws sure, but he's using what looks like an off the shelf Bosch router. Spindle run-out under load...

Wizard - I know exactly what you are saying. The reason I posted this thread was to get input from varied approaches to DIY and if the actual machined parts are within what they anticipated.

Check...

Very true.

Follows an old adage....

A rough carpenter uses a square carpenters pencil
A finish carpenter uses a sharpened point pencil
A cabinet maker uses a knife
A fine furniture maker...

Thanks everyone. I'm aware of the journey to DIY CNC. I rebuild machine tools as a hobby. I have well over 2000 hours in hand scraping slides and vee ways in flatness and geometry. I'm not an over...

I guess what I'm trying to determine is, what is the acceptable accuracy and consistency everyone is seeing in an 'average' DIY and Kit CNC router. I'm a numbers guy. LOL.

Thanks Gary and 109jb for the replies. I did watch an extensive blog of a guy on the internet that built a very substantial 48" x 96" machine with 3 x 3 steel tubing with welded and machined flanges...

Say if you nested 20 of the same part, such as a 6" x 6" square with 1/2" rounded corners and a hole drilled at the corner radius center point. Will the features in all 20 parts measure to within +/-...

Thank you everyone for your replies. You proved my suspicions. I'm a mechanical engineer in the automotive industry. Specifically block and head machining lines with 120 4 axis and 5 axis CNC...

Hello Everyone,

First some background, I'm an engineer with CNC machining experience and GD&T. I have a machine shop and have been thinking about building a CNC router capable of cutting aluminum...