Please note that 3d printing is still an new technology.
We as designers are still learning the in and outs of the processes involved.
So if your order gets rejected due to an error in design and you are left with a coupon you can send an e-mail to service@shapeways for a refund.
Also the models available in my shop are sold without any warranty.If any defects are found,please feel free to PM me and I will try to correct them and update the designs.