Shop by Species

DIY Vacuum Press

    Do It Yourself Vacuum Press

VeneerSupplies.com Monthly Newsletter

Better Bond TC-20™ Copper Adhesive

QuickShip
two

Zoom

Price:
$16.95
Customer Rating:
Size:
Freeze Protection:

 

Product Description


TC-20 Copper Adhesive

BetterBond's TC-20™ is the ultimate high-solids, fast drying, and non-flammable adhesive for copper veneer. TC-20 creates a permanent bond to a variety of substrates including MDF, particle board, plywood, and other porous surfaces. We have thoroughly tested and tortured dozens of copper sample panels with TC-20 and the results have been outstanding!

Shelf Life: 12 Months
Coverage:
32 square feet per pint or approximately 256 square feet per gallon
Safety Information:
Click here
Optional Freeze Protection: Click here for more information

Features

  • Fast Drying - Requires only 45 minutes of clamp time
  • Industrial Strength - Dries to a rigid film
  • Environmentally Safe - Contains no V.O.C.'s and is 100% solvent free
  • Ready to Use - No mixing required
  • Easy Clean-Up - Cleans up with water while wet
  • Heat Resistance - Up to 150° F
  • Highly Versatile - Bonds copper veneer to almost any porous material including MDF, particle board, or plywood

Directions

Like all water-based adhesives, TC-20 will only bond to a porous substrate. Sealers or coatings on the substrate will prevent the adhesive from adequate bonding. Remove any surface contaminants and test for porosity by placing a drop of water on the substrate. The surface can be considered porous if the water drop absorbs within 15 seconds. Some substrates can be made more porous by scuff sanding with 60 grit sandpaper. The minimum use temperature for the TC-20 adhesive is 65°F.

Place the veneer face down on a smooth, clean surface. Gently scuff-sand the back of the copper veneer with 80 or 120 grit sandpaper. In a well ventilated area, thoroughly wash the back side of the copper with water or acetone using a steel wool or synthetic steel wool (Scotch-Brite) pad.  Apply the adhesive to the porous substrate with a glue roller. A thin coat of glue is generally sufficient. Set the copper veneer onto the substrate while the adhesive is still wet. If necessary, apply painter's blue tape over the edges of the copper to prevent movement. Clamp the surface for 45 minutes using a flat piece of plywood and plenty of weight on top (books, tools, wood, etc). A vacuum press will also work very nicely.

Allow 90 minutes of curing before machining. Full bond strength takes place after 24 hours.

TC-20 is not suitable for exterior projects - even if protected from sun and rain. Not for use with copper containing zinc or copper surfaces which have been treated with a protective or gloss-enhancing chemical or process. Always test this adhesive on scrap material to determine its suitability for the project at hand.

Tip from Joe:
Don't forget a glue roller. It's worth every penny.

 


Learn more about this product by clicking here.


Will TC-20 bond thicker copper veneers?
As long as the bonding surface of the copper is free of surface contaminants, finishes, and coatings then TC-20 should bond with no problem. Always test a scrap first and then move on to the full size project.

What should I do if I just bonded some of your copper veneer to a piece of plywood and it's not sticking after 90 minutes?
This adhesive needs a full 24 hours to cure. If you "test" the panel before that time and try removing the copper, you will find the bond has not cured. It absolutely must have 24 hours before you judge the quality of the bond. I've yet to hear of a failure after the 24 hour bond time.

Does this adhesive work like contact cement?
This adhesive does not work like contact cement. The bonding and curing take place partly through an evaporative process.

Is this adhesive clear when dry?
No.

Can this adhesive be used outdoors or in any type of wet environment?
TC-20 is not suitable for areas that will be exposed to water. Continuous exposure to water will cause this adhesive to soften and lose its bonding strength.

What is the vicosity of TC-20 glue?
It is a bit thinner than standard yellow woodworking glue.

What is the shelf life of this adhesive?
Twelve months.

Can this adhesive be used to bond one copper surface to another?
TC-20 requires one of the bonding surfaces to be porous so it will not bond copper to copper or to any other non-porous surface.

Does TC-20 have copper particles in it?
There is no reason to put copper particles in this adhesive since it would not positively affect the quality of the bond strength.


Product Reviews

  1. Great Stuff....Love Dealing with Companies Like This

    Review by Eric A Beneker
    Rating:

    Great company to work with as it helps my company grow.
    This product is excellent with regards to copper and copper off-gassing issues when trying to laminate. I love that this product ships on time all the time i need it! Thank you much!


  2. Excellent Glue

    Review by Todd Messick
    Rating:

    I have used this product for three projects and all have worked out great. Excellent glue for copper to wood substrate. Best suggestion I can give is, leave clamped pressure on for 24 hours....you won't be disappointed. Very good product.

    [Note from Joe: Clamping for 24 hours is very excessive. My advice is to follow the directions on the bottle and clamp for one hour but allow 24 hours for full cure after clamping]


  3. The Torture Test

    Review by Dave Keaney
    Rating:

    The project I have in mind for this adhesive is to make copper countertops for my kitchen remodel. I have read a number of posts on other websites where the TC-20 was used to do just that, and the reports were pretty good. The one thing they didn't address was how well the TC-20 held up in the heat of the kitchen. Sooner or later somebody would set a pot of boiling water or a hot skillet directly on the countertop, and I'd really hate to find out that it resulted in delamination.

    Since nobody else had much to say about thermal stability (and "officially" the TC-20 is only rated to 150F), I decided to do a little testing. The results of those tests show the TC-20 will probably hold up pretty well to kitchen heat abuse. A summary of the testing I did follows, and I'm well enough satisfied that I won't be looking for other adhesives for my project.

    Anyway, here's what I did. I cut some strips of copper sheet left over from a different project, cleaned up the back to bright copper with 600 grit sandpaper, then after de-greasing with acetone, I glued them to a piece of plywood with the TC-20, and allowed one edge to overhang (to provide something to grab on to with vice-grips). I kept them clamped for an hour and then let the adhesive cure for 24 hours. The plywood was cut into "coupons" so each of the strips was on it's own piece of wood.

    Then came the torture test. They were placed in my home oven at temperatures ranging from 275F to 400F for 30 minutes, then removed and allowed to cool before checking adhesion. The procedure was:

    - Set the oven temperature.
    - Allow temperature to reach its set-point.
    - Place test coupon in the oven for 30 minutes.
    - Remove test coupon and set aside to cool.
    - Return to step 1 to set the next temperature, and repeat as needed.

    The temperatures used were 275F, 300F, 325F, 350F, 375F, and 400F. Note that because it was a home oven, the temperatures would overrun the set-point by about 20F during the heating session. This happened with each test coupon, so they all briefly reached temperatures 20F higher than the set-point. I used a good remote oven thermometer to watch the actual temperatures in the oven during the test.

    After cooling, each coupon was inspected. At all temperatures, the adhesive visible around the edge of the copper sheet remained somewhat "rubbery". There was some slight darkening of the adhesive at 375 and 400F. The plywood was darkened at temperatures of 350 and above, and at 400F was quite noticeably browned.

    After cooling, I grabbed the copper sheet with vice grips, held the coupon, and pulled... And the surface veneer layer of the plywood came off with the copper. It turned out that the veneer layer of the plywood had a thin MDF layer below it, and that is what failed, for all of the coupons.

    So, my verdict is that it will hold up reasonably well to hot pots and pans set onto a copper countertops without delaminating. I would avoid putting "smoking hot" skillets onto the countertop, but you wouldn't do that to most countertop materials anyway. Now I just need to get finished with my other projects before I start the countertops!


  4. Review from Eureka, CA

    Review by Gabe Douge
    Rating:

    Excellent adhesive for bonding copper to wood. Easy to use and cleanup too. I highly recommend this to anyone using copper veneer.


  5. Review from Byers, CO

    Review by Heidi Tufto
    Rating:

    This is the ONLY product to use if you are bonding copper to a surface. Though it is a little bit difficult to find, Veneer Supplies only carries the best products....items you don't find in the big box stores. These products, especially TC-20, are far superior, give better results, and will save you both time and money. Shipping is fast and the service is excellent!


  6. Review from Pawleys Island, SC

    Review by Larry Mayfield
    Rating:

    I have dealt with Veneer Supplies for several years now and have had excellent results. This was the only supplier that had a copper glue that I trust.


  7. Worked Flawlessly

    Review by John Pickrell
    Rating:

    I was fortunate to find this website through a Google search for an adhesive to bond copper sheet to MDF. Joe's web site is very informative. After investing in more than 100 square feet of patina copper for an accent wall, I had mistakenly purchased contact cement for the project.

    Joe and Christine shipped product to me quickly and their TC-20 has worked perfectly! Trimming the copper sheet with a laminate trimmer (Bosch hand router) worked flawlessly, the TC-20 allowed no delamination.


  8. Review fom West Lafayette, Indiana

    Review by Ryan Keene
    Rating:

    I've done a lot of research and have tried contact cement to adhere copper but it doesn't compare to this. This glue is MUCH easier to work with and has great adhesion. I had problems with the corners coming up while routing the edges of the copper veneer when I used contact cement. I haven't had any such problems with this stuff. It's great. No odor, unlike contact cement. It also has a much more open working time.

    Honestly, if you're paying the money for a copper veneer then this price shouldn't scare you away. Don't cut corners and ruin a project. This stuff is well worth it.


  9. Review from Rapid City, SD

    Review by Jeff Roltgen
    Rating:

    I have used this for copper and concur with all other reviews, but have a project requiring bonding a sheet of .020 brass. Since I had some left over TC-20, I laminated a scrap of brass stock to a scrap of plywood. I tried to peel off after normal cure time, and am simply peeling the plywood apart. The wood to brass bond will not give! Appears to work just as well with brass!


  10. Way Better...

    Review by Randy N.
    Rating:

    I have tried epoxy, gorilla glue, custom-made silicones just for copper, etc., and TC-20 works way better than these. I'm really glad I tried it.


  11. Many Tests - This One Works!

    Review by Scott B.
    Rating:

    Joe asked me to write my two cents on this glue so here goes.

    I work for an elevator repair company in New York. Most of our clients are up scale apartment buildings and offices. We have been installing copper veneer as trim and accents on the interior panels of each elevator cab for over 10 years. I've had my share of horror stories of delamination and repair work is not easy once the unit is installed.

    Recently I tried the TC20 glue on a whim. We were using an industrial grade contact adhesive previously. I honestly didn't think a "retail" glue would work very well. I found this to be untrue. The TC20 is excellent. We ended up buying so much of this adhesive that we had to convince Joe to offer it in a gallon size, which he promptly obliged.

    It's a bit expensive but you get what you pay for. Since we've began using this one, I have yet to be called back on a delamination repair.


  12. A Last Minute Surprise - Good Product

    Review by Miles Elsin
    Rating:

    This is not much of a review. I really just wanted to mention that it does take 12 hours to fully harden. After 2 hours, I tried removing the copper sheet and found that it would lift off with some pulling. This was of course disappointing but a day later I found the bond was like epoxy. Its never coming off now. This is a great product and it's also great because it doesnt have the stink of other copper adhesives.


  13. Great Product And I'm Ordering More

    Review by RICHARD MURDOCK
    Rating:

    I am an artist and I paint on copper panels that I make myself. I've tried YES! paste (horrible!), epoxies, and Gorilla glue during the construction of over 50 panels. None of the glues I tried were any better than poor and some (gorilla glue) caused random problems.

    I tried your TC-20 last night and it worked perfectly, easily and quickly. It's a great product and I'm ordering more.

    Thanks,
    RM



How would you rate this product?
Enter your review in the space below.
Enter a short title for your review.
What is your first and last name? (both are required)
Enter the code below.
Security Check


Review Suggestions:
Was your order shipped timely and affordably?
Did the item arrive safely?
Did this item exceed your expectations?
Is website description accurate and fair?
Would you recommend this product to a friend?
Did Joe answer any questions about this product for you?


Your Wish List

Want to save this item for later? Click the button below to add this item to your wish list.

You Recently Viewed...