Torque wrench and screw pulling technique
Hi, is it recommended to use a torque wrench during the entire assembly of the printer? Some users reported that setting the wrench to a value of 4.5Nm (suggested in the manual) actually damaged the screw heads. Also, is there a video on the "screw pulling" technique mentioned in Chapter 1 of the Assembly Instructions? Thanks
Best Answer by On The Spot:
You can use a torque wrench to tighten the frame together (I have done so), just make sure you use the right torque wrench, one that is capable of that low of a torque - many used for automotive purposes won't, and even on their lowest setting will break the screws. In the US I had to find one that was capable of Inch/Pounds instead of the more common Foot/Pounds. Even then I still go back during regular preventive maintenance and re-torque the screws.
The "screw pulling" technique is rather easy. When inserting a nut into a plastic part, use a screw longer than what is called for to come through the part and tighten it until the nut seats into the part. Then back the screw out and the nut should not fall out. This is also mentioned during the Y-Axis assembly chapter on the "Y-Belt-Idler"
RE: Torque wrench and screw pulling technique
You can use a torque wrench to tighten the frame together (I have done so), just make sure you use the right torque wrench, one that is capable of that low of a torque - many used for automotive purposes won't, and even on their lowest setting will break the screws. In the US I had to find one that was capable of Inch/Pounds instead of the more common Foot/Pounds. Even then I still go back during regular preventive maintenance and re-torque the screws.
The "screw pulling" technique is rather easy. When inserting a nut into a plastic part, use a screw longer than what is called for to come through the part and tighten it until the nut seats into the part. Then back the screw out and the nut should not fall out. This is also mentioned during the Y-Axis assembly chapter on the "Y-Belt-Idler"
RE: Torque wrench and screw pulling technique
I use a cheap, gun smithing torque screwdriver. Those go down lower in torque setting.
When drawing in a nut, be sure it is aligned with the angles of the pocket before cranking up the tension.