Vibration Compensation for A1 and A2L

Vibration Compensation for A1 and A2L

Bambu Lab has shown with the A2L how effectively adaptive vibration compensation can improve print quality. The underlying principle is as simple as it is proven and is also used in high-quality tools. For example, a recoil-free hammer has a chamber filled with steel shot or sand. Upon impact, the filler material moves with a time delay, absorbing part of the rebound energy and thus reducing unwanted vibrations. The result is a more controlled movement without annoying bouncing or spring back.

Since the crossbeam of the A2L has the same dimensions, it makes sense to use this damper concept there as well. Especially at high printing speeds, the vibration behavior can be further optimized.

For this reason, I have developed a vibration damper for the A1 and A2L. It absorbs kinetic energy in both the X and Y axes, contributing to a smoother operation of the printer. Especially when the AMS lite or filament spools are mounted on top of the device, disruptive movements are significantly reduced. This ensures a cleaner and more consistent print quality, especially during fast printing processes.

The vibration compensators consist of a container with integrated baffle plates. These limit the free movement of the filling material, increase internal friction, and thereby improve energy absorption.

The dampers achieve their full effect primarily with small, rapid movements.

Material

Neither glue nor screws are required for assembly. For filling, I recommend fine-grained sand, as it provides a particularly good damping effect.

Printing

PETG is particularly suitable for printing, as the retaining clips are slipped over the upper beam, and PLA is usually too brittle for this.

Assembly

Fill the containers with sand up to the top edge of the baffle plates. A little air should remain at the top so that the filling material can move freely.

Close the containers with the lids and then attach the side clips with the opening facing downwards. The shape of the lid automatically dictates the correct position.

Attach the vibration dampers to the left and right sides of the printer's upper crossbeam.

The dampers are also compatible when the AMS lite is mounted on top.

Function Test

After printing, you can directly test the effect of the dampers: Fill one chamber with sand as described, close both chambers with the lids, and secure them with the clips. Then, first shake the empty absorber by hand, and then the filled one. The difference in damping effect will be clearly noticeable.