UGEARS 3D Puzzle Marble Track Chain - Father's Day Gift, Creative 3D Wooden Puzzles for Adults with Rubber Band Motor - Marble Track Chain Wooden Model Kit - Unique Wooden Puzzle - 3D Puzzles

Well thought out model to build. It's not the easiest, putting some parts together requires "fingerspitzengefuhl": press hard enough to make it fit, but not so hard that it breaks. For me nothing was broken, but one has to be careful. Fortunately the manual is very good, pointing out those parts where you have to pay attention to the shape of a part. It took about six hours to assemble. The wood is good quality. I also like that they put the part numbers next to the part, so that after assembly you just see the wood. Disadvantage is that you need to keep track of what part is what number. Other kits have the number on the part, which makes that a bit easier, but results in the numbers visible after assembly.

Guter Kundenservice. Gute Aufbauanleitung. Anspruchsvolles Modell, teilweise etwas kniffellig, gut gearbeitet. Etwas Vaseline und ein Pinsel statt Wachs erleichtern Teile wie z.B. Zahnräder zu schmieren. Noch nicht ganz fertig, aber macht Spaß! Slawa Ukraina

l'article est de bonne qualité, le montage est accessible à la majorité des gens. Le final est sympathique avec le mécanisme qui permet de faire circuler les billes. Très satisfait

上昇させるチェーン部がよく引っかかり動きがよくないので、2台目との接続用のギャーにモーターを接続して作動させると辛うじて作動するようになった。作動部の潤滑には蝋では不十分なのでグリスを多量に使用したら動くようになった。動きのよくないところを補正して、やっと70%ほどの作動が可能になった。土台が弱くフラつくので厚めの板に固定した。非常に複雑な装置なのでもう少し強度が必要である。苦労して作ってなんとか動くので満足して作動させている。

bellissimo fatto veramente bene, curato ogni minimo dettaglio