Frequently Asked Questions

Absolutely. Please contact us directly. Once all your requirements are confirmed, we will produce samples within 5 days. The standard package includes 3 sample sets. If you need additional test samples, simply cover the price difference.

We maintain ample stock inventory and can typically ship the same day an order is placed. For bulk orders exceeding 100 cartons in a single shipment, we require 5 days to complete production and scheduling.

We are confident in our factory’s manufacturing quality and offer industry-leading after-sales protection. Our policy is 90-day return, 180-day replacement. For specific return/exchange procedures, please contact your dedicated sales representative.

For standard in-stock designs, MOQ starts at just 1 carton. Depending on the product, that’s either 20 or 50 sets per carton — ideal for initial market testing. For OEM orders requiring custom packaging or new molds, the typical MOQ is 500 sets. For quantities below 500, we will provide a custom quote based on your specific requirements.

Wood has inherent fragility, but we include free spare parts on every puzzle sheet for small, breakable components (such as connectors and thin strips). Players can use spares immediately without waiting for after-sales support.

Our products feature high-precision physical interlocking (mortise-and-tenon) design — over 95% of steps require no glue. For the best experience, each kit includes sandpaper; players only need a craft knife to assist with assembly.

We recommend sanding off any burrs on gear edges with the included sandpaper before assembly, then applying paraffin wax or candle wax for lubrication. This significantly reduces friction and ensures smooth gear or wind-up operation.

We recommend gently pressing from the back side (the side with thicker lines) or lightly scoring the connection points with a craft knife. Never force parts out — this prevents the wood from splitting along the grain.

Absolutely! We use unbleached wood sheets, which are ideal for painting. We recommend watercolor or acrylic paints. Avoid applying thick paint on gears or moving joints to prevent affecting mechanical operation.

For B2B partners, we offer comprehensive after-sales parts replacement. Simply provide the Part Number from the instruction manual, and we will include free replacement parts with your next order batch — or ship them directly to resolve your retail concerns.

No. We use high-precision laser cutting with tolerances within 0.05mm, and all slots are tight-fitting. The finished model is very sturdy — not only as a desk display, but mechanical versions can also be enjoyed long-term.

Recommended safe age is 14 and above (14+). For children aged 8-13, we recommend adult supervision and guidance — making it an excellent parent-child STEM activity. Children aged 3-8 must participate with adult supervision.

Natural wood expands and contracts with humidity changes. If you encounter resistance in extremely humid conditions, don’t force it — simply sand the protruding connectors lightly with sandpaper until they slide in.

Yes. When disassembling, follow the reverse steps in the instruction manual. Grip the base of the part with both hands and gently push it out parallel — avoid rocking or snapping the tenon joints.