otto watercolor paper stretching system

the ORIGINAL clamp system

2 New Sizes Now Available !!

The Otto System is a unique, frustration-free artist's tool that allows paper of all weights to be securely stretched in preparation for watercolor use. The unique clamp design of the tool eliminates damage to the deckle edge from tacks, staples or tape commonly caused by other stretching techniques and products on the market. The finished painting is as flat as the original sheet with no resulting paper damage or clamp impressions.

The Otto System is an original design of artist Ron Otto. The clamp bars are made from renewable hardwood poplar. The fasteners are stainless steel, and the mounting surface is made from 1/2" core board. The efficient light-weight design and construction materials makes the clamp system easy to use, and very portable for any indoor or outdoor venue.

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all 4 clamp

Artist / Illustrator Jean-Baptiste Monge

"I'm going to use an Otto Stretcher to stretch the paper, a very practical system."


The Otto Stretcher is now available in 6 different sizes; Full, Half, Quarter and Eighth standard sheets. Custom sized clamp systems can be special ordered upon request. Sold individually or in money-saving combo packs. Each clamp system comes with the 4 clamp bars, a loop handled wrench for fastening, core board and instructions.

Our Commitment

We strive to deliver a level of service that exceeds the expectations of our customers.

All of our products are hand made and carefully packaged for shipping. If at anytime you are not satisfied with your product call us.

contact us

Please feel free to reach out to us at anytime with questions or comments.

Phone: 425-419-7715

Email: Otto Art Products

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