Similar pipe clamps allow you to move easily keeping panels flat when glueing

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3 orange bars with a board on, handing holding board

You can't be too rich, too attractive, or have too many clamps, but you can have too varied an assortment of clamps. So when you buy pipe clamps, stick to one model. Identical clamps support a glue-up on a flat plane better than a mix of clamps with bars at varied heights.