Hey Jeff,

Ill be the first to admit I know very little about the CNC DIY scene. The reason I chose to use this design is I personally like the simplicity of the design and the fact that I can source many of the parts for little expense.

I have asked questions regarding the backlash and have also read his build log on cnczone. I see from the build log he has asked lots of questions and made changes when he has been able to improve the design of the machine. Based on contact with the designer and viewing threads he has started I am satisfied that I could be following a worse design.

I must admit I too was curious about the wear of the belt and did ask the question about the backlash, he has indicated that there is none after months of use however he did admit this is something that can vary depending on the use of the machine. I did call fenners in the UK who confirmed that the belts I will be using are designed for this purpose and should perform to a high standard. I am realistic enough however to accept that the system may need revising at some stage as you have pointed out.

I see many people going on about rapids and tbh it doesnt bother me, personally I think anyone cutting at these speeds would be mad. I am happy to walk away from the machine letting it jog along all day. After all even at low speeds it would out perform me all day long.

One thing I do not like however is the limits as you pointed out. I will certainly be installing a 'hard stop' as the last thing I need is the gantry falling off!!

Furthermore with regards to the gantry twist I do feel I would like to do my best to eliminate any possibility of this. Would you have any advice on how to possibly overcome this? I did try to look at your gantry but the photos are not shwoing?

I appreciate your input in this, the community here is awesome. Once I have received the tables from the fabricator I will start a build log and post some photos.

Thanks again for your reply, hopefully I can resolve some of these problems before they start!

:)