![]() The lead screw will only need to be long enough for the travel, plus any structure and lead-nut positioning. It generally does not matter if it is longer at the other end as long as the lead screw provides the desired travel for that axis. My average 2D design takes approximately 35-40 minutes to complete. ![]() Lead screw link: !5-5-starts-10-tpi Antibacklash nut link: !5-5-starts-10-tpiĬlick the link to add information to this solution: I built a 2' x 4' cnc about 2 years ago and bought all the plans and part through this website. The above (link below) 5 start 1/2" lead screws will travel one inch with only 2 turns of the motor! That is a drastic difference and you will get more torque from your motor since most of the torque is present at low speeds. A standard allthread will only travel one inch after 13 turns of the motor. The reason why the feedrate and jogging speed is faster is because the lead screw will travel a farther distance for each turn of the motor. This will allow you to have up to 200-300 IPM (inches per minute) travel and cutting speeds. Yes, if you are using 1/2" standard allthread lead screw coupled to your stepping motors, you can increase the speed by changing the lead screw to 10 TPI 5 Start Lead Screws with antibacklash nuts.
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