Filters
Four Triangles and a Ball - Alan Holden

Interlocking / Wood

Designer: Alan Holden
Maker: Kathleen Malcolmson

Hangman's Puzzle - Robert Sandfield

Disentanglement

Designer: Robert Sandfield
Maker: Kathleen Malcolmson

Sandfield's ReBanded Dovetails - Robert Sandfield

Puzzle Box / Wood

Designer: Robert Sandfield
Maker: Kathleen Malcolmson

Sandfield's Three-Layer Double Dovetail - Perry McDaniel

Take-apart / Wood

Designer: Perry McDaniel
Maker: Kathleen Malcolmson

Bowling alley in a briefcase - Kathleen Malcolmson

Sequential Movement / Metal

Designer: Kathleen Malcolmson
Maker: Kathleen Malcolmson

Sandfield bollixed briefcase - Kathleen Malcolmson

Sequential Movement / Metal

Designer: Kathleen Malcolmson
Maker: Kathleen Malcolmson