Darryl Keil Last Activity 2025-02-12 2:48 PM
2 replies, 1115 viewings
 
back
Navigate threads:
< Previous Thread :: Next Thread >
 
^ Top
Paul Stoops

 
Subject : Thick Veneering
Posted : 2003-02-22 2:20 PM
Post #28689
Hi Darryl,I am new to vacuum veneering so I have a couple of basic questions.I have a project in which I would like to add (4) strips of 1/8" thick X 6" wide Jatoba veneer to both sides of 3/4" hardwood plywood to form a 1" thick X 24" wide X 48" long panel. 1)How hard and fast is your recommended veneer thickness of 3/32"? 2)Does veneer tape have enough "pulling power" to hold the veneer strip edges in contact? One side or both sides?3)Can the veneer be applied to the two sides in a vacuum bag in two separate operations?4)Are cauls necessary for this application?Thank you for providing this forum. Your timely responses are very informative.Paul Stoops



 
^ Top
Art Stratemeyer -...

 
Subject : Thick Veneering - just completed one
Posted : 2003-02-24 7:51 AM
Post #28695 - In reply to #28689
Hi Paul,Thanks to the help of Darryl and others here I just completed a similar projct.2 44" x 60" panels to make up the top for a 10' table.I chose to resaw to around 1/8" because I knew that I would be removing material in the ultimate finishing process.I also chose to bury soldid wood along the edges of honey comb and down the middle. This was for both attachment to the 4" cherry edging I was using and for attachment to the stringers underneath. The honeycomb was both lighter and very easy to work with. I first made up a test panel since it was my first vacuum job. I used 3M "blue" easy release masking tape that was 2" wide. I found that those places where I did not put it on the joints of the veneer, the Unibond 800 came through so on the final panel I taped all the seems full length with it and it came up just fine with no glue seepage.My layup was4mil plastic on top of the bottom caul ( to keep glue off it )1/4" hardened masonite cut to the size of the layup placed on top and bottom. ( I used a file to soften the edges and corners of the top piece of masonite to protect the bag.Also used the masking tape on the ends of the veneer boards to hold them registered on the inner layer.Then another layer of 4 mil plastic and then the 2nd panel stacked on top of the first with masonite on top of it. So I pressed both panels at once.Set up roller stands at the mouth of the bag so that I could roll the entire thing easily into and out of the bag.In my cool/cold shop here in NC, I left the layup under vacuum for about 10 hours even though a sample of the glue seemed to harden up in about 5 hours. I also put an electric blanket over the bag. Took the panels out and let them stand for 24 hours before beginning work on them.: Hi Darryl,: I am new to vacuum veneering so I have a couple of basic questions.: I have a project in which I would like to add (4) strips of 1/8" : thick X 6" wide Jatoba veneer to both sides of 3/4" hardwood plywood : to form a 1" thick X 24" wide X 48" long panel. : 1)How hard and fast is your recommended veneer thickness of 3/32"? : 2)Does veneer tape have enough "pulling power" to hold the veneer : strip edges in contact? One side or both sides?: 3)Can the veneer be applied to the two sides in a vacuum bag in two : separate operations?: 4)Are cauls necessary for this application?: Thank you for providing this forum. Your timely responses are very : informative.: Paul Stoops




 
^ Top
Darryl Keil

 
Subject : Thick Veneering
Posted : 2003-02-23 6:43 PM
Post #28693 - In reply to #28689
Paul,Well, its not an absolute rule as a number of factors effect the amount of expansion and contraction you will get. Type of wood, how its sliced, what time of year its pressed, what climate you live in, how big the panel is. You will have to decide. At least dont go over 1/8".I dont think regular veneer tape will hold you resawn veneer all that well. Try some of the low stick masking tape (do not use this stuff on regular veneer), apply to only the face side.Yes, you can apply the veneer to each side seperately. Just make sure that you go right back in to veneer the back side. Do not let the pressed panel sit out of the bag for any length of time. I prefer to press both side at the same time, which is what I recommend. My panels always seem to stay the flatest that way.No, you dont need cauls for resawn veneer, only on standard veneer you buy.SincerelyDarryl Keil: Hi Darryl,: I am new to vacuum veneering so I have a couple of basic questions.: I have a project in which I would like to add (4) strips of 1/8" : thick X 6" wide Jatoba veneer to both sides of 3/4" hardwood plywood : to form a 1" thick X 24" wide X 48" long panel. : 1)How hard and fast is your recommended veneer thickness of 3/32"? : 2)Does veneer tape have enough "pulling power" to hold the veneer : strip edges in contact? One side or both sides?: 3)Can the veneer be applied to the two sides in a vacuum bag in two : separate operations?: 4)Are cauls necessary for this application?: Thank you for providing this forum. Your timely responses are very : informative.: Paul Stoops
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