Fixed Gantry machine design tips

[Boyan Silyavski]

The other reason i dont like long and wide for that matter Fixed gantry, is that the table that moves has to ve sturdy and the only solution there is a very expensive aluminum plate, while you can throw anything you have at hand for the bed . Also a protection should be done for the ballscrews

And as the table grows, the motors will grow and the machine will grow slower.

Not a problem though if you will be cutting metal mainly

I still believe the Z is the most important thing, not only the gantry , if gantry properly made. And i can prove it to anybody how a 2 meter wide gantry cuts up to mild steel with mirror like finish. And aluminum like butter.

[JAZZCNC]

The other reason i dont like long and wide for that matter Fixed gantry, is that the table that moves has to ve sturdy and the only solution there is a very expensive aluminum plate, while you can throw anything you have at hand for the bed . Also a protection should be done for the ballscrews

And as the table grows, the motors will grow and the machine will grow slower.

Not a problem though if you will be cutting metal mainly

I still believe the Z is the most important thing, not only the gantry , if gantry properly made. And i can prove it to anybody how a 2 meter wide gantry cuts up to mild steel with mirror like finish. And aluminum like butter.

It's all a matter of degree of difficulty and expense.!. . . .Give me enough money and I could build you a Fixed or moving gantry 5 axis machine with 20Mtr travels that will cut titanium like butter.!! . . . The simple fact is that a Fixed gantry will always be stronger because it can be over engineered with less cost in terms of effect on performance and component cost. Downside is it takes much more room.

Your Machine Boyan is a credit to you, but it's massively over engineered for what it's doing which cost's extra money that isn't really required. It's also well beyond what most people can achieve in there little sheds or garages with limited tools. Some people don't want to pay for a whole machine much more than what you paid for the 3mtr straight edge.!!

A fixed gantry machine is a good choice if you have the room as it allows you to get high strength without having the expense of building a very strong and heavy moving gantry which requires bigger better motors etc.