[Eduardo Amaro Valenzuela Cantauria Taller, Woodshop]

Hello Paul From Chile Eduardo

I use this vinyl Bag clamp called Vacupress. https://www.vacupress.com/product/20-30-vinyl-vacupress-bags/

I use for clamp Guitar Tops like a 3-5mm of thickness and 0.45mm also. I have a Old pump with clamping presure is 25 inhg ( 0,8KG x Cm2) or 0,8 Bar.

My experience was with

– Ash body and Flame Maple top

-Peruvian Mahogany Body with Flame maple top

-Okume With Lenga ( Chilean Cherry) ( be carefull with the open grain of okume, need extra load of Adhesive.

-Ash Body With Patagonian Rosewood.

-Ash Body With Poplar Burl 0.40 mm top

( is necessary use a vacuum meter for more pressure resolution and precision)

The adhesive is Titebond 2 or 3 and some times with Venners use Multibond 2015 ( from titebond Industrial) with 30min or 1 Hour of clamping time.

Yo can see more uses at my instagram https://www.instagram.com/p/Ch8DlI6gw5t/

I hope this information is helpful
greetings

Eduardo

vacupress.com

20 & 30 Vinyl VacuPress® Bags | Vacuum Pressing Systems

20 & 30 Vinyl VacuPress® Bags for vacuum veneering and laminating all types of flat and curved woodwork. Air-tight seal, heat-welded seams.