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EM-40 Starbond Heavy Thin CA Glue (Medium Thin)

Easy Flow Formula

Oil-like consistency allows for easy penetration

Strengthens & Stabilizes

Stabilizes, seals and repairs fragile material

High Gloss Finish

Create beautiful high gloss finishes on wood

Availability: In stock

  • 2 oz. Heavy Thin - $10.50
    2 oz. Heavy Thin
    Includes 8 microtips, 2 applicator caps, 1 clog-free stopper | $5.25/ounce
    free shipping

    FREE Shipping

  • 16 oz. Heavy Thin (Bulk Size) - $45.00
    16 oz. Heavy Thin (Bulk Size)
    Includes 50 microtips, 4 applicator caps, 4 empty two ounce bottles, 1 easy dispensing yorker spout, 1 clog-free stopper | $2.82/ounce
    free shipping

    FREE Shipping

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Product features

  • PREMIUM CYANOACRYLATE SUPER GLUE - LAB TESTED FOR OPTIMAL PERFORMANCE: High performance industrial grade adhesive infiltrates deep and stabilizes cracks through capillary action.

    2 ounce includes: (2) applicator caps, (1) clog-free stopper, and (8) 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 "FINISHING" ADHESIVE: Great for wood turning finishes, metal powder inlays, turquoise inlays, mother of pearl inlays, infiltrating and stabilizing, and bonding close-fitted parts. Penetrates the finest micro-fractures, pores, and cracks through capillary action.

  • PROPERTIES: Viscosity: 40 cPs (meaning the thickness of the liquid is similar to that of olive oil). Penetrating abilities of up to 0.004" in size. Bonding time: 5-10 seconds.

  • LONG LASTING 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 EM-40 Heavy Thin CA glue is an ethyl cyanoacrylate "finishing" super glue used in making wooden finishes. As an easier glue to handle than the EM-02, it makes for an excellent substitute that is not as watery. This thin CA is slightly "heavier" in viscosity than your typical thin, but it is thin enough to penetrate most fractures, joints, pores, and metal inlay material. Starbond EM-40 Heavy Thin CA glue has become popular for high gloss wood finish applications. By applying several coats, sanding, and then polishing, the heavy thin CA creates a waterproof seal.

Use of Starbond Accelerator is advised when saturation of a porous object is unwanted. The instant cure will prevent Starbond EM-40 Heavy Thin CA glue from excessively soaking into the porous object, and prevent waste.

Used In:

  • Repairing and filling cracks, inclusions, voids, and knots in wood
  • High gloss finishes for a hard, clear, and waterproof coat
  • Pen making
  • Wicking into and stabilizing guitar
  • Installing bindings and purflings on a guitar
  • Gluing and repairing guitar inlays on the headstock, body, and fretboard
  • Bonding balsa wood for model airplanes
  • Metal and turquoise inlays
  • Jewelry manufacturing and repair
  • Furniture refinishing and antique repair
  • Ceramic repair
  • Marble, Granite and Quartz repair
  • Bonding fiberglass to a variety of material
  • For fishing, bonding dumbbell eyes, larger streamers and big foam flies

Compatible With:

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


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

Customer Reviews

Customer Reviews(2)

Great Product
I wasn't able to use this glue for my intended purpose but ended up using for many unintended things! The applicators work great and the glue flows well and holds great. A value for sure. Highly recommended!
Review by Mark P / (Posted on 11/24/2019)
Great for finishing turning projects
This was the first glue that I started using as finshing pens on my lathe. If your not into turning I know that it is hard to wrap your head around but this is the stuff you want to use. Basically the process is sand your blanks to around 600G then apply thin layers of the CA glue via paper towel, I apply up to 12-15 thin coats to build up the layers. Ill let dry for at least 8 hours then wet sand with micromesh. The finish comes unbelievably glossy. Paired with accelerator you can do many things with this glue, I buy in bulk 48oz containers where you'll get multiple small bottles and tip sizes. The viscosity is similar to water but maybe a tad thicker.
Review by Jim / (Posted on 11/13/2019)


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