My dad and I are wanting to build one of these to carve out solid body guitars and necks. Was it hard to build this? Where could I get plans at and do they cost any money?
Hi there! Nice design! I am in the process of building a 8 foot by 10 foot model and am concerned about getting the appropriate motor size. i am trying linear bearing instead of roller bearings. What is your gear ratio on your x-axis? 1:1? is your sprocket attached directly to your motor shaft via a connecting shaft?
@MrBuildernate the sprocket is directly connected to the motor shaft. Idler sprockets help the chain use most of the drive sprocket pitch diameter. There are 9 teeth on the sprockets and the pitch is .25", so the machine travels 2.25" in one turn. With 16 microsteps, I am able to achieve 1422.222 steps per inch. The motor size will depend more on the weight you are moving with the motor.
@anajonesr right now i calculate that i will have about 100 lb gantry. with the coefficient of friction at 0.17 for my slides i should only need a torque of 2.8 lb-ft. (considering the size of the machine!) btw the slides that i found make the bearing system way easy but unsure if it will work in pruduction. i found them on a website called 80/20.com its a nylon linear bearing with a extruded aluminum rod. amazing stuff.
@MrBuildernate Yes, I am familiar with the 80/20 extruded aluminum. I don't know how well the nylon bearing and the amount of play that will have on the whole system, but it sounds pretty good. Alternatively, you could also use v-groove type bearings with hardened and ground steel rails connected to the extruded aluminum. This aluminum has great properties for structure.
@TheEntertainer93 The stepping motors for the 2x4 is 425 oz-in per axis. On the 4x8, it is NEMA 24 425 oz-in on the y and z and NEMA 34 640 oz-in for the x axis.
Can this machine cut in all 3 axes simultaneously?
EveryonefromBnet 9 months ago
@EveryonefromBnet Sure. This is a natural feature of all CNC Machines.
anajonesr 9 months ago
My dad and I are wanting to build one of these to carve out solid body guitars and necks. Was it hard to build this? Where could I get plans at and do they cost any money?
tharrington11 1 year ago
@tharrington11 This particular machine is sold as a kit. You will have to go to builyourcnc to get full details.
anajonesr 1 year ago
Can this cut metal too?
MegaDeathwarrant 1 year ago
@MegaDeathwarrant Yes, using shallow passes.
anajonesr 1 year ago
Hi there! Nice design! I am in the process of building a 8 foot by 10 foot model and am concerned about getting the appropriate motor size. i am trying linear bearing instead of roller bearings. What is your gear ratio on your x-axis? 1:1? is your sprocket attached directly to your motor shaft via a connecting shaft?
MrBuildernate 1 year ago
@MrBuildernate the sprocket is directly connected to the motor shaft. Idler sprockets help the chain use most of the drive sprocket pitch diameter. There are 9 teeth on the sprockets and the pitch is .25", so the machine travels 2.25" in one turn. With 16 microsteps, I am able to achieve 1422.222 steps per inch. The motor size will depend more on the weight you are moving with the motor.
anajonesr 1 year ago
@anajonesr right now i calculate that i will have about 100 lb gantry. with the coefficient of friction at 0.17 for my slides i should only need a torque of 2.8 lb-ft. (considering the size of the machine!) btw the slides that i found make the bearing system way easy but unsure if it will work in pruduction. i found them on a website called 80/20.com its a nylon linear bearing with a extruded aluminum rod. amazing stuff.
MrBuildernate 1 year ago
@MrBuildernate sorry...wrong number....that torque number is wrong
MrBuildernate 1 year ago
@MrBuildernate Yes, I am familiar with the 80/20 extruded aluminum. I don't know how well the nylon bearing and the amount of play that will have on the whole system, but it sounds pretty good. Alternatively, you could also use v-groove type bearings with hardened and ground steel rails connected to the extruded aluminum. This aluminum has great properties for structure.
anajonesr 1 year ago
awesome, how strong are your step motors? thanks for the vid
TheEntertainer93 1 year ago
@TheEntertainer93 The stepping motors for the 2x4 is 425 oz-in per axis. On the 4x8, it is NEMA 24 425 oz-in on the y and z and NEMA 34 640 oz-in for the x axis.
anajonesr 1 year ago
Did anybody notice the nut on the stepper motor mount shaking?
murtazaml 2 years ago
You are right. I totally forgot to tighten those nuts. They are very tight now.
anajonesr 2 years ago