Creality CR-10S calibration tips
The detailed assembly process of the new Creality CR-10s printer can be found in the instruction manual attached to the equipment or at the following link from the Creality company:
Here are some of my practical tips on how to properly control and calibrate Creality CR-10S before its first launch. For this purpose, several basic tools will be useful (allen keys, spanners, caliper and angle ruler).
Let's start from beginning
1. First, pay special attention to the existing frame bolts. It happens that the screws that fasten individual frame components are not tight enough. The hexagon socket head cap screws should be carefully tightened, being careful not to break the threads in the aluminum profiles.
2. An important step is to correctly adjust the X, Y and Z-axis rollers (on both sides). The slack system in the CR-10s printer was solved using non-concentric nuts on which rollers are mounted. All rollers with the cart stopped should be able to rotate them with Finders, with slight resistance. If the rollers rotate without any problems or require a lot of turning, the slack adjustment should be adjusted.
a) Adjusting the X-axis trolley slack: Adjustment is carried out using the double wrench supplied (8-10mm). The off-center (adjustment) nut is located on the side of the work table. It is worth placing the profile with the X-axis carriage about 200mm above the work table and remove the tin head cover – this will facilitate the manipulation of tools during adjustment. First, slightly loosen (1/8 turn) the self-locking nut that tightens the roller axle to the sheet metal trolley (8mm wrench). Then, using a 10mm wrench, turn the non-centered nut clockwise (delete the slack between the roller and guide) or counterclockwise (increase the slack between the roller and guide). Correctly deleted slack between the rollers and the guide should allow us to rotate each roller in the fingers relative to the guide with a slight resistance. After adjustment, remember to tighten the self-locking nut of the roller axle. CAUTION! Too much slack can cause the rollers to deform and result in their damage! Excessive slack will affect print quality.
b) Adjusting the Y-axis trolley slack: In the first step, the printer base should be turned 180 degrees, this will facilitate access to the guide rollers of the table base. The factory has 6 guide rollers, of which (CAUTION!) the middle row must be removed. Four extreme rollers ensure optimal table stability, with easier clearance adjustment and reduced weight of the entire table. The clearance adjustment is carried out in the same way as in point a) and applies to a pair of rollers located on the left side of the base.
c) Adjusting the Z-axis trolley slack: Before adjustment, remove both trapezoidal screws and completely unscrew and remove the top profile fastening the two vertical printer guides. Both carriages have 3 rollers, of which only one (right) has a slack adjustment with a non-concentric nut. Before adjusting the slack of the right trolley, loosen the screws that secure the X-axis guide to the left and right trolley. Adjustment of slack is carried out in the same way as in the previous points. CAUTION! Before tightening the X-axis carriage guide, pay special attention to its perpendicular position to the printer base. To do this, use the caliper to measure (around the left Z cart) the distance between the lower edge of the X-axis profile and the upper surface of the base profile, then set the X guide on the right, keeping the previously measured distance (keeping parallel to the printer base). The final achievement of the parallelism of the X guide is a somewhat complicated process due to the fact that access to the screw heads is impossible after installing the left trolley on the vertical guides.
3. After adjusting the play of the rollers, you can proceed to re-insert the Z-axis trapezoidal screws. A common procedure used when coupling the stepper motor axis with a propeller is to insert a ball bearing (ø6-7mm) into a flexible aluminum coupling (between the motor shaft and the trapezoidal screw). This solution will allow for precise screw mounting directly on the motor shaft face while maintaining the flexibility of the connection.
4. The next step is to position the brass bushes of the trapezoidal screws properly. To do this, loosen the screws securing the brass nuts to the Z-axis bogies and set the head in the lower position (about Z = 0mm). Then tighten the trapezoidal nut fixing screws previously loose. This treatment will allow for optimal alignment of the nut axis relative to the axis of the Z-axis motors. The vertical movement of the X-axis guide driven by trapezoidal screws should be smooth throughout the range (from 0mm to 400mm).
Creality CR-10S calibration goes to the end
At first glance, the Creality CR-10s calibration process may seem complicated. However, passing through the individual points will allow for a better understanding of the CR-10s operating principle and minimizing the factors that negatively affect the quality of prints.
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