![Carl Hoff](https://mat1euce1imatprod.s3.eu-central-1.amazonaws.com/designers/f57e7258-5c30-4af9-bdf2-c4737fb3d98a/logo/cropped/logo2.png?X-Amz-Expires=604800&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJB2Y5XOSK4IFPVMA/20240727/eu-central-1/s3/aws4_request&X-Amz-Date=20240727T042113Z&X-Amz-SignedHeaders=host&X-Amz-Signature=15b18e97650ff9fa846555e7a8ce79269878d159cd98f0f06b4a53bf16d899b3)
Carl Hoff
![Carl Hoff](https://mat1euce1imatprod.s3.eu-central-1.amazonaws.com/designers/f57e7258-5c30-4af9-bdf2-c4737fb3d98a/avatar/cropped/logo1.gif?X-Amz-Expires=604800&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJB2Y5XOSK4IFPVMA/20240727/eu-central-1/s3/aws4_request&X-Amz-Date=20240727T042113Z&X-Amz-SignedHeaders=host&X-Amz-Signature=0cbfec3bb4b96f3fe5357cb22857569e0f4819d32c8cccf1883623c47ae1c2ff)
Welcome to the i.materialize shop of Dr. Carl Hoff. I started publishing twisty puzzle designs back in January 2007 on TwistyPuzzles.com. Up until 2011, all my designs were made in POV-Ray which doesn't allow saving in a format suitable for 3D printing. However after seeing other designers offering 3D printed designs for sale, I've now taught myself some tricks and I'm offering my designs for sale here.