Is there such a thing as a non-stick clamping caul blocks?

[ziplock9000]

As you can see in this image I'm gluing two boards together with two sash clamps. I'm also holding the ends of each board where they meet level with two G-clamps.
To avoid them making a dent into the soft wood and also not stick to the glue I added some grease proof paper and thin pieces of MDF. This process was a bit of a fiddly hassle.
It got me thinking, are there no cheap and easy non-stick clamping caul blocks? Maybe silicone or something else that will be strong enough and not stick?

 

[Phil Pascoe]

Cut up an old HDPE chopping board.

 

[Derek Cohen (Perth Oz)]

Wrap plastic electrical tape or packing tape around your caul.

Regards from Perth

Derek

 

[sometimewoodworker]

Cling film wrapped round your cauls

 

[Yojevol]

I use bits of laminate flooring.
I notice you haven't used any protection on the sash jaws to avoid indentation.
Also protect the sash bar. If this were oak and using a water based glue, you could get a nasty black stain.
Brian

 

[paulrbarnard]

Cling film wrapped round your cauls

This is the method I use.

 

[Doug B]

Yeah another vote for clingfilm, I also wrap it round my clamps when using pu glue as it seems to get everywhere

 

[TheUnicorn]

Yeah another vote for clingfilm, I also wrap it round my clamps when using pu glue as it seems to get everywhere

I found foil to be more effective for PU glue ups, the foil tops from tubs of spread (marge etc) seem a good size and shape.

 

[Jacob]

I use drafting/masking tape on clamp jaws and sash clamp bars, or on the workpiece itself.

 

[Hornbeam]

Parcel tape. Melamine coated chip works well for clamping blocks but not at the exposed chip edges

 

[ziplock9000]

Cut up an old HDPE chopping board.

Yes!, great idea

 

[ziplock9000]

I use bits of laminate flooring.
I notice you haven't used any protection on the sash jaws to avoid indentation.
Also protect the sash bar. If this were oak and using a water based glue, you could get a nasty black stain.
Brian

The first time I forgot and completely got away with it, so I've continued for the next 4 glue ups and got away with it then. I know I shouldn't though and will use the same caul blocks that I'm hoping to find.