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KBL-500 Starbond Black Medium-Thick CA Glue

Dries jet black

Dries jet black and polishes to a high gloss finish

High Impact Rubber Toughened Formula

Great for bonding RC car tires and speaker repair

Fill Voids in Dark Wood

Highlight and hide imperfections in ebony, spalted wood and burl

Availability: In stock

  • 2 oz. Black Medium-Thick - $13.50
    2 oz. Black Medium-Thick
    Includes 8 microtips, 2 applicator caps, 1 clog-free stopper | $6.75/ounce
    free shipping

    FREE Shipping

  • 16 oz. Black Medium-Thick (Bulk Size) - $65.00
    16 oz. Black Medium-Thick (Bulk Size)
    Includes 50 microtips, 4 applicator caps, 4 empty two ounce bottles, 1 easy dispensing yorker spout, 1 clog-free stopper | $4.06/ounce
    free shipping

    FREE Shipping


Product features

  • PREMIUM CYANOACRYLATE SUPER GLUE - LAB TESTED FOR OPTIMAL PERFORMANCE: High performance industrial grade adhesive. Black Medium-Thick CA is used to bond parts, with focus on impact and shock absorbance qualities.

    2 ounce includes: (2) applicator caps, (1) clog-free stopper, and a bag of micro-tips for precision.
    16 ounce includes: (1) Easy dispensing yorker spout, (3) empty 2 ounce bottles, (4) applicator caps, (1) clog-free stopper, and a bag of micro-tips for precision.

  • STRONG "BONDING AND FILLING" ADHESIVE: ideal for spalted wood and burl, hiding imperfections, filling dark voids, and accenting specific areas in your projects.

  • PROPERTIES: Viscosity: 500 cPs (meaning the thickness of the liquid is similar to that of syrup). Penetrating abilities of up to 0.008" in size. Bonding time: 40-60 seconds.

  • SUPERIOR SHELF LIFE: When well kept, our product can last several years in a cold environment. Just make sure to store the bottle under 40°F before AND after use to QUALIFY FOR OUR 20 month shelf life warranty. If product does not last, we will replace that bottle free of charge.

Product description

Starbond KBL-500 Black Medium-Thick CA glue is a flexible, rubber-toughened super glue that dries jet black in color. The KBL-500 is ideal for hiding imperfections, filling dark voids, and accenting specific areas in your projects. Along with impact and shock absorbing properties, the black CA retains favorable qualities such as the ability to be sanded down and polished to a high gloss finish. Additionally, when infiltrating fractures, pores, and soft material, the adhesive is able to expand and contract with its surrounding malleable environment, preventing cracking. Starbond KBL-500 Black Medium-Thick CA glue is commonly used in reconing speakers, hobby RC car tires, woodturning inlays, burl, and spalted wood. heavy duty bonding, and filling voids.

It is important to keep in mind that the colored CA glues have an extended bonding time due to the added rubber compound. Although bonding time is generally 40-60 seconds, it can take much longer to dry when larger volumes of the colored adhesive are applied. For these instances, use of Starbond Accelerator is highly recommended.

WARNING This product can expose you to chemicals including Carbon Black and Methyl isobutyl ketone, which is known to the State of California to cause cancer. For more information go to

Used In:

  • Accenting designs on spalted wood
  • Bonding dissimilar materials such as wood, metal, glass and rubber
  • Creating a black accent on projects
  • Gluing R/C Car tires
  • Threadlocking in R/C cars
  • In speaker manufacturing, bonding top plate to frame, spider to voice coil, spider assembly to frame, spider to cone assembly, dustcap to cone, gasket to surround, surround to frame or cone, cone to coil connections, dressing lead wires to cone, and select dustcap applications.
  • Repairing and filling cracks, inclusions, voids, and knots in wood

Compatible With:

    • Wood
    • Metal
    • Rubber
    • Leather
    • Ceramics
    • Gemstones
    • Rocks & Minerals
    • Carbon Fiber
    • Fiberglass
    • Most Plastics

Available in 2 ounce, 16 ounce, and 44 lb. (20kg)

Customer Reviews

Customer Reviews(18)

I already knew their products were great but I am absolutely shocked at the level of customer service
I have used some of their products in the past so I already know the quality is phenomenal. For those reviewers that say that shelf life is poor that means you're not sealing the bottle properly This stuff does not dry out I've had one particular bottle on my shelf for over 6 months and it's perfectly fine. For the more on that bought the black glue and is asking why it's black that's why. You need to ask for the clear glue if you want clear glue. The reason for my five-star review is I was amazed yesterday when I returned home opened my mailbox and found a free bottle of accelerator and a thank you card from the company! The accelerator costs almost as much as the glue I bought. Truly just an exceptional experience customer service wise I would highly recommend this product but more so the customer service and their company!!! Absolutely floored by that gesture! Thank you Starbond your newest lifelong customer I will never buy a different brand of glue again!!
Review by Derek Houde new lifelong customer!!! / (Posted on 3/10/2020)
I always have a bottle on hand
This product is a shop essential for me. When I'm dealing with knots and cracks, i use starbond to fill those voids with the accelerator spray. Not only is it a quick and easy process, but the finish result looks amazing and really enhances the look. I no longer avoid knots and cracks, i actually enjoy putting them in pieces now that i have Starbond. Ive been using this product for over a year now and have had great success. The product comes with multiple tips just in case you accidentally let the glue dry like i did, so those come in handy. Tip for when you're done using the product, when you place the bottle on the table, give it a little tap at the bottom, this will help the glue come back down so you can keep the tip clean for storage.
Review by Mullaney Woodworks / (Posted on 1/2/2020)
You need it...
Not sure how I managed cracks prior to this. It is so easy to fill cracks, small voids etc. I am primarily a woodturner & it works so great & makes for beautiful accents.
Review by Curl of the Burl / (Posted on 12/30/2019)
A must have in the wood shop
I use this stuff on many projects that need little voids or bug holes filled. My only gripe is how gunked up the tips get after a while but they do send extras in the kits which is nice. Highly recommend!
Review by Scott / (Posted on 12/27/2019)
This ca glue works amazingly well! I use it to fill voids in multiple woodworking products without issue. Easy to use and looks great after curing. The extra tips are great too so that you can put as little or as much ca glue as your want to a specific area.
Review by My Honey's Handmade / (Posted on 11/25/2019)
Works great
Works just like advertised. I use it to fill cracks or imperfections in darker hardwoods. It has a very quick turnaround time.
Review by Ethan / (Posted on 11/19/2019)
Use it on almost every project
This black CA glue has been a huge time saver on almost every project. I use it every time I work with dark woods as it stabilizes holes and cracks in just seconds, sands away nicely, and blends in perfectly. No more mixing up epoxy to fill tiny voids and waiting for it to cure. This stuff is a must have!
Review by Porush Woodworking / (Posted on 11/19/2019)
Amazing and easy
I'm amazed by this product, I use mainly thick black to fill gaps in wood, and to glue little pieces of dark wood, love the texture when it's dry, I try to make cool effects too. I'm very happy the way it looks after sanding.
Best glue ever!
Review by Ben / (Posted on 11/19/2019)
Thumbs up
I didn’t have any epoxy and this worked perfectly. Used the accelerant and was back in business in no time. Great product.
Review by Michelle / (Posted on 11/18/2019)
Essential in Any Shop
This stuff is liquid gold! It has saved my butt multiple times with quick repairs to chip offs, making jigs and any and all small adhesive jobs. This is a NECESSITY for small knot and crack fills. Definitely reccomend getting the accelerator! You'll be back up and running in minutes!
Review by Seth / (Posted on 11/18/2019)
An essential tool for woodworking
I use epoxy in most, if not all of my woodworking project. There is nothing more disappointing then getting close to finishing and finding cracks, voids or imperfection after you’ve already spend countless hours sanding. No one wants to wait another 24 hours for more epoxy to cure. I would usually find myself saying “I’ll get this done tomorrow” and then never getting to it. as a hobby woodworker When you have time you need to take advantage. Starbond is the perfect fix that doesn’t hinder your work flow. Find a crack fill it and keep going. Can’t Imagine working without it now.
Review by Justinporrodesigns / (Posted on 11/15/2019)
Quick and easy
This stuff is gold. It works so quickly with the activator and way quicker than waiting around for epoxy to dry. Massive time saver and fills voids and cracks easily. Highly recommended for anyone
Review by Nick brown / (Posted on 11/15/2019)
Favorite SB product
I have a variety of star bond CA glues but this is my most used paired with accelerator. For darker woods and finishes this is my go to knot and void filler, a few coats of this glue in any void and a quick sand can fix any type of void. If your using lighter woods and finishes give the Medium brown a go. I also use this for building quick jigs in the shop, the glue is very thick but until it is fully cured doesn't get super hard super quick, it is more forgiving than the thinner CA glues. I buy this in the 16oz bulk containers as I go through it. What i love is they send you multiple smaller bottles and a wide variety of tips. Its good stuff I highly recommend.
Review by Jim / (Posted on 11/13/2019)
Awesome PRoduct
Thick enough to fill voids without running all over your workpiece. Quick drying but using the accelerator gets you back to work instantly. Excellent results when used with carbide turning tools. Thanks Starbond!
Review by Lew / (Posted on 9/25/2019)
It over flows after using
Review by Hank / (Posted on 8/17/2019)
Saves time!
This is exactly what I needed in lieu of epoxy for my project this time. I may be switching over completely now!
Review by MJ / (Posted on 7/23/2019)
More Color Options
I would only like to see more color options...possibly some vibrant colors to add a unique flare to wood projects. Tourquoise or copper, bright red or blue?
Review by Gaines / (Posted on 1/19/2019)
Awesome product
Review by Josh / (Posted on 1/14/2019)


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