FAQ

• FDM—BestGee T220S series

  Summary of some frequently asked questions about T220S series products.

• Laser Engraving — LC100

  1. What is the size and distance of the engraving? The user can customize the engraving size, with a maximum engraving size of 100mm x 100mm. The recommended distance from the laser head to the object surface is 20cm.

• About after-sales support

  As long as your product is directly purchased from TronHoo’s official channels, we will provide corresponding after-sales support for each device we sell. For complete after-sales terms and operating procedures, please refer to our after-sales service page for details.

• FDM — Printing filament stringing

  When the nozzle moves over open areas between different printing parts, some filament oozes out and produces strings. Sometimes, the model will cover strings like a spider web.

• FDM — Lower parts cave in

  Excessive bed heat is the culprit in this case. As the plastic is extruded it behaves similarly to a rubber band. Normally this effect is held back by the previous layers in a print. As a fresh line of plastic is laid down it bonds to the last layer and is held in place until it fully cools down below the glass transition temperature (where the plastic becomes solid).

• FDM — Elephant’s foot

  “Elephant feet” refers to the deformation of the bottom layer of the model that slightly protrudes outward, making the model look as clumsy as elephant feet.

• FDM — Printing materials warping

  The bottom or upper edge of the model is warped and deformed during printing; the bottom no longer sticks to the printing table. The warped edge may also cause the upper part of the model to break, or the model may be completely separated from the printing table due to poor adhesion to the printing bed.

• FDM — Overheating

  Due to the thermoplastic character of the filament, the material becomes soft after heating. But if the temperature of the newly extruded filament is too high without being rapidly cooled and solidified, the model will easily deform during the cooling process.

• FDM — Over Extrusion

  Over-extrusion means that the printer extrudes more filament than needed. This causes the excess filament to accumulate on the outside of the model which makes the print in-refined and the surface not smooth. 

• FDM — Under Extrusion

  Under-extrusion is that the printer is not supplying sufficient filament for the print. It may cause some defects like thin layers, unwanted gaps, or missing layers.

• FDM — Inconsistent extrusion

  Good printing requires continuous extrusion of filament, especially for accurate parts. If the extrusion varies, it will affect the final print quality such as irregular surfaces. 

• FDM — Not sticking

  A 3D print should stick to the print bed while printing, or it would become a mess. The problem is common on the first layer but still can happen in mid-print.