Darryl Keil Last Activity 2025-09-09 11:09 AM
6 replies, 2888 viewings
 
back
Navigate threads:
< Previous Thread :: Next Thread >
 
^ Top
Don Stephan

Posts: 825

Joined: 2003-07-18
Location: Cincinnati, Ohio

User Profile 
Subject : Double Layer of Paper Honeycomb
Posted : 2009-03-01 12:52 PM
Post #35305
Have a small shelf request that at 2.5" thick would require two layers of 1" honeycomb sandwiched by 3 layers of 1/4" plywood. Each layer of honeycomb will have outer "frame" of 1" x 1" poplar to stiffen the edge, and blocks of 1" poplar in the honeycomb anywhere solid wood might be needed.

Given problems with "shifting" in past, might glue internal frame for bottom layer to bottom plywood with hide glue the day before, press just the bottom "half", then glue upper internal frame, and finally the upper "half" the 4th day. Want to avoid brads, even veneer pins in the assembly if possible, doweling with wet glue applied would be messy and time-consuming. Vacuum pressure will be lowered to 15 psi when pressing the honeycomb; if after pressing the shelf were covered with veneer the pressure would be bumped back to 25 psi.

Has anyone found more efficient technique to hold outer strips of honeycomb frame in place? On the last single layer honeycomb pressing the long frame pieces had slight bows, and lots of packing tape wasn't able to keep them straight during the pressing.

Has anyone successfully clamped the entire 5-layer sandwich in one pressing? Just curious.

Thanks.


 
^ Top
Darryl Keil

Posts: 1455

Joined: 2003-05-22
Location: Maine

User Profile 
Subject : RE: Double Layer of Paper Honeycomb
Posted : 2009-03-02 4:00 PM
Post #35306 - In reply to #35305

Don,

I don't think you would have much success gluing all the layers at once. I would glue the border strips and blocking to both outer skins with yellow glue, wait an hour, then press up the whole sandwich. I find doing all the gluing the same day keeps the final panel good and flat.

Darryl Keil


 
^ Top
Don Stephan

Posts: 825

Joined: 2003-07-18
Location: Cincinnati, Ohio

User Profile 
Subject : RE: Double Layer of Paper Honeycomb
Posted : 2009-03-02 8:54 PM
Post #35307 - In reply to #35306
So I don't need to be concerned using a non-rigid glue on the borders and internal blocking? They will be a relatively small percentage of the total glue surface. Thanks DK.


 
^ Top
Jeff Patrick


Joined: 2004-04-15
Location: Bainbridge Island, WA

User Profile 
Subject : RE: Double Layer of Paper Honeycomb
Posted : 2009-03-07 6:19 PM
Post #35309 - In reply to #35307
Don

To get the 2.5" thickness, you can also use rigid foam insulation. I've been using styrofoam as a core with urethane glue to attach the outer skins. The foam is readily available in 1,1.5, and 2" thickness. I began using this because the honeycomb material is very expensive after shipping to me.

Jeff


 
^ Top
ckurak

Posts: 107

Joined: 2006-10-28
Location: Florida

User Profile 
Subject : RE: Double Layer of Paper Honeycomb
Posted : 2009-03-08 12:53 PM
Post #35311 - In reply to #35309
Jeff,

Which urethane glue did you use? And, where did you find the thicker styrofoam?

Thanks,

Charles


 
^ Top
Jeff Patrick


Joined: 2004-04-15
Location: Bainbridge Island, WA

User Profile 
Subject : RE: Double Layer of Paper Honeycomb
Posted : 2009-03-09 5:38 PM
Post #35314 - In reply to #35311
I used Gorilla Glue the last time, but I've also used one by.... somebody else..can't remember. I know a lot of people hate poly glues, but I find for sticking styrofoam to wood, they work very very well. The styrofoam is easily purchased from my local building supply house. It's a regular "lumber yard" not a big box. Two inch thick rigid foam is not that uncommon an item in the building trades. Probably other types of foam board will work.


 
^ Top
ckurak

Posts: 107

Joined: 2006-10-28
Location: Florida

User Profile 
Subject : RE: Double Layer of Paper Honeycomb
Posted : 2009-03-10 10:25 AM
Post #35317 - In reply to #35314
Jeff,

Thanks for the glue name. I have tried some solvent based contact cement in the past, with disastrous results: the foam simply melted.

I will check out a regular "lumber yard" instead of the big box store for the foam. I am assuming that you are referring to blue or pink "extruded" when you talk about "rigid foam" as opposed to the white styrofoam that looks like pieces of ceiling popcorn. I wonder what thicknesses they stock here in Florida. A lot of these folks don't think about insulation the way northerners do. (I remodeled one house in north Florida years ago that had a single sheet of aluminum foil with 1" of fiberglass above the ceiling as the "insulation." )

Thanks,

Charles
back
Navigate threads:
< Previous Thread :: Next Thread >
Legend      Notification  
Administrator
Forum Moderator
Registered User
Unregistered User
 Toggle e-mail notification


Logo by MAZY
Running MegaBBS ASP Forum Software v1.5.14b public beta