You will work with a natural material that is nice to the touch. The high quality plywood is sufficiently durable, although sometimes you may need a few spare parts. We completed each kits with spare parts, but in case you need extra ones, please, feel free to contact us at customerservice@ugearsmodels.com. \rWe would ask you to provide us with your postal address, the list of the required parts and the photos of the corresponding board or detail. The Ugears team will send the requested spare parts to the address provided in your e-mail free of charge in an envelope by post. So you can complete your model. The most convenient way is to fill out this application form for spare and replacement parts.\r \rWe want to assure you that the assembly of Ugears models is a pleasant, interesting and fun pastime. Ugears wants to share the joy of creativity and bring people together through making things with their own hands. Take your time enjoying the assembly while the detailed and comprehensive illustrated step-by-step instructions take you along the way.