Frequently asked questions
3d printing technics used? printers used? General pricing?
CMF titanium （Gr5） 2.3-2.7 €/g (We will lower the price less than 2 euro in 2022 )
What is the quality of the finished surface?
SLM: the finish roughness is approximately R7, in the isolated areas(areas without support material).
In isolated areas where the support material is removed the surface texture can be altered. During the SLM process support material is printed to support the construction of the parts and the factory will use power tools to remove the supports by hand. This will inevitably result in some minor damage to the surface where the support is attached. However, the effect can be minimised during the SLM product design phase by adjusting the printing direction to place the supporting surface in an inconspicuous location, such as the bottom surface of the fork crown, where surface texture is less important.
We would also be happy to deliver the product with the support material still attached if you would like more control over its removal.
Figure 2: typical SLM part before and after support material removed.
Figure 3: typical SLM surface minor damage to the surface of a support remove areas.
CMF: the finish is better than SLM overall and there is no need to remove the supporting material. The surface is uniform and smooth.
SLM: the parts after heat treatment generally shrink slightly. about-0.1/-0.2mm, the printer will compensate by itself, so the design size is ideally the size you get. the shriek only happen on open structure mostly，like the CS, HT-DT etc connection holes， thatsｉgave a reference here. so the reality is not all the direction shrink evenly. The printing direction and others parts near the printed part will affect the local shrinkage as well.
General tipps for first time design of 3d printed parts
3: The gap of the product to be assembled should be placed 0.15MM on each side
4: For parts with high requirements for partial assembly (such as bearing hole/diameter/plane assembly position), leave a machining allowance in advance, and then go through secondary finishing
5: Metal printing is somewhat slender after high temperature sintering, thin-walled parts, shells and other structures will be deformed. If you would like to maintain the thin-walled shape，please design a supporter or a cap at the end of voids to avoid distortions.
6: Heat treatment is optional