-
Hey Guest!
British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!**Upgrade Now**
(PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
Looking for good experience with veneer companies.
- Thread starter tomshobby
- Start date
Share this page
Brosky
Great Pumpkin
Offline
Re: Looking for good experience with veneer compan
OK, now I'm getting an education in something I know nothing about. Well, I guess that is really a lot of things, but back to this one for now.
Can you explain exactly what you and Tom are doing with these vacuum presses? I can't grasp the sequence of events, so explain it in layman's terms to a dummy.
How do you go from pitiful looking dash to what you hav ein the plastic?
And thanks!
OK, now I'm getting an education in something I know nothing about. Well, I guess that is really a lot of things, but back to this one for now.
Can you explain exactly what you and Tom are doing with these vacuum presses? I can't grasp the sequence of events, so explain it in layman's terms to a dummy.
How do you go from pitiful looking dash to what you hav ein the plastic?
And thanks!
OP
tomshobby
Yoda
Offline
Re: Looking for good experience with veneer compan
Sorry Paul, the vacuum in the bag exerts force on the parts like a uniform press. Just an easy way to get uniform pressure on the veneer so there are no voids under it. Only a few pounds of vacuum per square inch can exert a lot of pressure overall on the veneer surface.
The beautiful finish is not part of the vacuum process. /bcforum/images/%%GRAEMLIN_URL%%/smile.gif
Sorry Paul, the vacuum in the bag exerts force on the parts like a uniform press. Just an easy way to get uniform pressure on the veneer so there are no voids under it. Only a few pounds of vacuum per square inch can exert a lot of pressure overall on the veneer surface.
The beautiful finish is not part of the vacuum process. /bcforum/images/%%GRAEMLIN_URL%%/smile.gif
hondo402000
Darth Vader
Offline
Re: Looking for good experience with veneer compan
I believe you can get a food saver at target, not really cheap but will come in handy after the project, but only by the foodsaver by tillia, any other is junk,
buy your wife one for christmas
https://www.jardenstore.com/products.aspx?pgsz=9&bid=18&cid=79
I believe you can get a food saver at target, not really cheap but will come in handy after the project, but only by the foodsaver by tillia, any other is junk,
buy your wife one for christmas
https://www.jardenstore.com/products.aspx?pgsz=9&bid=18&cid=79
Brosky
Great Pumpkin
Offline
Re: Looking for good experience with veneer compan
Hondo & Tom,
While I appreciate your guidance in the selection of the brand for the sealer, suggesting that I give it to my wife for Christmas after what I've spent on the car this year will be an express ticket to divorce court.
I think that I had better be a bit more creative for her than getting items related to the car or kitchen. Which reminds me, it's about time to start doing something about that before it's too late.
Hondo & Tom,
While I appreciate your guidance in the selection of the brand for the sealer, suggesting that I give it to my wife for Christmas after what I've spent on the car this year will be an express ticket to divorce court.
I think that I had better be a bit more creative for her than getting items related to the car or kitchen. Which reminds me, it's about time to start doing something about that before it's too late.
hondo402000
Darth Vader
Offline
Re: Looking for good experience with veneer compan
sorry paul I should know better by now to put the HaHa on the end of that one, I ASSumed, aka me being the ASSumer that you never buy your wife or girlfriend any thing that is a tool even a kitchen variety unless specifically ask for by the receiveee and then it better have a diamond attached to it now having correct that I still think that if you want to vacuum press the dash the foodsaver does work but you could just glue the veneer and put lots of bricks as a weight until it dries just put parchment paper down so the veneer doesnt stick to anything, I had a vacuum sealer so I used it
sorry paul I should know better by now to put the HaHa on the end of that one, I ASSumed, aka me being the ASSumer that you never buy your wife or girlfriend any thing that is a tool even a kitchen variety unless specifically ask for by the receiveee and then it better have a diamond attached to it now having correct that I still think that if you want to vacuum press the dash the foodsaver does work but you could just glue the veneer and put lots of bricks as a weight until it dries just put parchment paper down so the veneer doesnt stick to anything, I had a vacuum sealer so I used it
PC
Obi Wan
Offline
Re: Looking for good experience with veneer compan
Oil-filled rotary pumps are designed for medium-high vacuum, low flow applications. Vacuum pressing doesn’t need anywhere near so much vacuum. Yours may be a bit slow pumping down but it will get there. The extra clamping force with the higher vacuum is only a few percent.
Most commercial vacuum veneer press systems use compressed air powered venturis to generate vacuum. But some will use oil-less mechanical pumps.
One thing to watch out for when using an oil-filled pump is backstreaming of oil into your process. If you lose power while pumping they sometimes blorp oil out of the inlet. It probably won’t be a big problem in your vacuum veneering setup since they usually have low evacuated volume but it’s something to be aware of.
You’ll probably want to put a valve in the line to the press. If your bag seals well you’ll be able to pump it down, valve it off, turn off the pump and let it sit till it dries. If it leaks you’ll have to pump it down occasionally until it sets.
PC.
It looks like an oil-filled rotary pump for air conditioning service. If so, it’s overkill for vacuum pressing. (I’m a big fan of overkill, but overkill of one good thing at the expense of other good things may not be optimal.) It will work fine, but there are a couple things to watch out for.tomshobby said:It is just a fancy compressor that inhales.
Oil-filled rotary pumps are designed for medium-high vacuum, low flow applications. Vacuum pressing doesn’t need anywhere near so much vacuum. Yours may be a bit slow pumping down but it will get there. The extra clamping force with the higher vacuum is only a few percent.
Most commercial vacuum veneer press systems use compressed air powered venturis to generate vacuum. But some will use oil-less mechanical pumps.
One thing to watch out for when using an oil-filled pump is backstreaming of oil into your process. If you lose power while pumping they sometimes blorp oil out of the inlet. It probably won’t be a big problem in your vacuum veneering setup since they usually have low evacuated volume but it’s something to be aware of.
You’ll probably want to put a valve in the line to the press. If your bag seals well you’ll be able to pump it down, valve it off, turn off the pump and let it sit till it dries. If it leaks you’ll have to pump it down occasionally until it sets.
Commercial systems designed for small shops are about the size of a shoebox. You shouldn’t have any trouble cobbling a similarly small one together from surplus bits.Brosky said:
PC.
TR3driver
Great Pumpkin - R.I.P
Offline
Re: Looking for good experience with veneer compan
FWIW, the little air-powered vacuum 'pumps' (actually a venturi tube) should work fine if you have an air compressor (and don't mind letting it run while the glue sets). I've seen them as cheap as $7.
No good for A/C work IMO, but great for anything else that needs a vacuum source (but not a particularly hard vacuum).
FWIW, the little air-powered vacuum 'pumps' (actually a venturi tube) should work fine if you have an air compressor (and don't mind letting it run while the glue sets). I've seen them as cheap as $7.
No good for A/C work IMO, but great for anything else that needs a vacuum source (but not a particularly hard vacuum).
Brosky
Great Pumpkin
Offline
Re: Looking for good experience with veneer compan
Hondo,
No offense taken by me!! I should have ha-ha'd mine. My Mom preached to me as a young man that I was to never buy an appliance or household item as a holiday or birthday gift for my future spouse.
My Dad quietly concurred, after not having ANY conversation with my Mom for a week or so one year. It was the year that he thought a new iron would be a great present for her. I don't remember what ever happened to that iron, but I'll never forget the look on my Mom's face when she opened the box.
Hondo,
No offense taken by me!! I should have ha-ha'd mine. My Mom preached to me as a young man that I was to never buy an appliance or household item as a holiday or birthday gift for my future spouse.
My Dad quietly concurred, after not having ANY conversation with my Mom for a week or so one year. It was the year that he thought a new iron would be a great present for her. I don't remember what ever happened to that iron, but I'll never forget the look on my Mom's face when she opened the box.