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The Platten for Vacuum Systems

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Project by Lee A. Jesberger posted 2473 days ago 3362 views 4 times favorited 21 comments Add to Favorites Watch
The Platten for Vacuum Systems
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When gluing up panels in a vacuum bag, it is important to have a substrate under the parts. This substrate is called a platten. The platten is supporting the parts, much like a bench top. The platten is inserted into the bag along with the project being glued up.

The more important purpose though, is to permit air evacuation from all areas of the bag. In the picture showing one of our plattens, you can see 1/8” saw kerfs, about an 1/8” inch deep. These permit air to be removed from under the flat panels, with no obstructions. It is important to keep these airways, or saw kerfs free of glue build up. Also, cured urea resin glue is hard, brittle, and quite sharp, so keeping the platten free of dried glue is important to prevent it from cutting your bag, or interferering with your projects laying flat .

The tops of projects must also have a platten, but this can be a 1/4” thick piece of M.D.F., and cut about 1/4” larger in both directions, than the panel being glued. It dosen’t need kerfs.

The bags themselves must be kept clean of dried glue for the same reason.

Notice also, that it is a piece of Mellamine, which prevents the glue from sticking to it. It has all corners and edges rounded with a 1/4 round bit, which prevents the sharp corners of the platten from puncturing the bag.

If your bag should get punctured, it is repairable, much like a pool liner.

It is also possible to make your own bags if desired. There are several sites on the net that offer both the supplies and instructions to do this.

We don’t make our own bags, but this is due to a lack of time as much as anything else.

Lee

-- by Lee A. Jesberger http://www.prowoodworkingtips.com http://www.ezee-feed.com





21 comments so far

View woodspar's profile

woodspar

710 posts in 2599 days


#1 posted 2473 days ago

Thanks Lee, good information. This is an area I really know little about so I appreciate your writing about it.

-- John

View Max's profile

Max

55949 posts in 2773 days


#2 posted 2473 days ago

Great info. I am going to have to try my hand at this at some point…

-- Max "Desperado", Salt Lake City, UT

View WayneC's profile

WayneC

11988 posts in 2597 days


#3 posted 2473 days ago

Thanks before long we will all be veneering…

-- We must guard our enthusiasm as we would our life - James Krenov

View Karson's profile

Karson

34796 posts in 2900 days


#4 posted 2473 days ago

Great info Lee.

-- I've been blessed with a father who liked to tinker in wood, and a wife who lets me tinker in wood. Southern Delaware karson_morrison@bigfoot.com †

View Lee A. Jesberger's profile

Lee A. Jesberger

6642 posts in 2479 days


#5 posted 2473 days ago

Hi John,

My pleasure. I hope it leads to an expanded woodworking arsenal for you!

Lee

-- by Lee A. Jesberger http://www.prowoodworkingtips.com http://www.ezee-feed.com

View Lee A. Jesberger's profile

Lee A. Jesberger

6642 posts in 2479 days


#6 posted 2473 days ago

Hi Max,

Go for it!

Lee

-- by Lee A. Jesberger http://www.prowoodworkingtips.com http://www.ezee-feed.com

View Lee A. Jesberger's profile

Lee A. Jesberger

6642 posts in 2479 days


#7 posted 2473 days ago

Wayne,

Your on to me huh!

Lee

-- by Lee A. Jesberger http://www.prowoodworkingtips.com http://www.ezee-feed.com

View Lee A. Jesberger's profile

Lee A. Jesberger

6642 posts in 2479 days


#8 posted 2473 days ago

Thanks Karson.

I hope it helps expose everyone to a great asset to us wood workers.

Lee

-- by Lee A. Jesberger http://www.prowoodworkingtips.com http://www.ezee-feed.com

View Don's profile

Don

2598 posts in 2676 days


#9 posted 2472 days ago

Lee, you won’t believe what I use for vacuum molding. This was developed by a company in Canada for home-made skate-board manufacturing by a company called Thin Air press Technology. The vacuum is created with a hand pump. It looks rather amateurish, but it really works quite well. The bag is 26” x 28”.

-- CanuckDon "I just love small wooden boxes!" http://dpb-photography.me/

View Lee A. Jesberger's profile

Lee A. Jesberger

6642 posts in 2479 days


#10 posted 2472 days ago

Hey Don,

I’ve seen these advertised, but have never seen one in use. I imagine they are perfect for small boxes and the like.

Lee

-- by Lee A. Jesberger http://www.prowoodworkingtips.com http://www.ezee-feed.com

View MsDebbieP's profile

MsDebbieP

18613 posts in 2660 days


#11 posted 2472 days ago

oooooh small boxes!!
Don loves small boxes

-- ~ Debbie, Canada (https://www.facebook.com/DebbiePribeleENJOConsultant)

View CharlieM1958's profile

CharlieM1958

15544 posts in 2718 days


#12 posted 2472 days ago

I smell an internet search in my future….

-- Charlie M. "Woodworking - patience = firewood"

View Lee A. Jesberger's profile

Lee A. Jesberger

6642 posts in 2479 days


#13 posted 2472 days ago

Hi Debbie,

Can you blame him?

Lee

-- by Lee A. Jesberger http://www.prowoodworkingtips.com http://www.ezee-feed.com

View Lee A. Jesberger's profile

Lee A. Jesberger

6642 posts in 2479 days


#14 posted 2472 days ago

Hi Charlie,

Should be a small button on your computer that takes you to the internet! LOL

Lee

-- by Lee A. Jesberger http://www.prowoodworkingtips.com http://www.ezee-feed.com

View mot's profile

mot

4911 posts in 2536 days


#15 posted 2472 days ago

Any information I can read and watch on this topic is useful. With your descriptions, Neil’s videos and Davids primer, I can’t help but get interested. Funny, in all the stuff I’ve watched, and forgive me if it’s been mentioned and I just missed it, I did not know why the plattens had the kerfs in them until now. I’m sure that it’s been mentioned, but I’m in a bit of information overload with veneering.

Thanks Lee!

-- You can discover more about a person in an hour of play than in a year of conversation. (Plato)

showing 1 through 15 of 21 comments

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