---
product_id: 23783184
title: "BSI-205 Slow-Cure™ Epoxy - 4.5 oz. Combined, Clear - 30-Minute Working Time Adhesive for Wood, Fiberglass, Metal, Crafts & Structural Repairs"
brand: "bob smith industries"
price: "21517CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Bob Smith Industries"
url: https://www.desertcart.sn/products/23783184-bsi-205-slow-cure-epoxy-4-5-oz-combined-clear
store_origin: SN
region: Senegal
---

# 30-min working time Waterproof & heat resistant 4500 PSI tensile strength BSI-205 Slow-Cure™ Epoxy - 4.5 oz. Combined, Clear - 30-Minute Working Time Adhesive for Wood, Fiberglass, Metal, Crafts & Structural Repairs

**Brand:** bob smith industries
**Price:** 21517CFA
**Availability:** ✅ In Stock

## Summary

> 🔧 Slow down, build strong — the epoxy that works as hard as you do.

## Quick Answers

- **What is this?** BSI-205 Slow-Cure™ Epoxy - 4.5 oz. Combined, Clear - 30-Minute Working Time Adhesive for Wood, Fiberglass, Metal, Crafts & Structural Repairs by bob smith industries
- **How much does it cost?** 21517CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/23783184-bsi-205-slow-cure-epoxy-4-5-oz-combined-clear)

## Best For

- bob smith industries enthusiasts

## Why This Product

- Trusted bob smith industries brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Grip:** Bonds wood, metal, fiberglass, glass, ceramics & plastics with crystal-clear finish.
- • **Built to Endure:** Exceptional 4500 PSI tensile strength ensures impact-resistant, load-bearing bonds.
- • **Trusted by Pros:** Ideal for boat repairs, structural fixes, and demanding crafts where strength is non-negotiable.
- • **Gap-Filling Power:** Thicker formula fills uneven surfaces and porous gaps without compromising clarity.
- • **Precision Meets Patience:** Generous 30-minute working window for flawless alignment and complex projects.

## Overview

Bob Smith Industries BSI-205 Slow-Cure™ Epoxy is a premium 4.5 oz clear adhesive offering a 30-minute working time, perfect for precise, high-strength bonding across wood, metal, fiberglass, and more. Waterproof and heat resistant, it delivers a tough 4500 PSI bond with excellent gap-filling properties, making it the go-to choice for professionals and serious DIYers tackling structural repairs and crafts.

## Description

SLOW-CURE 30 min. epoxy works best for forming reinforcing fillets on joints. It has the highest strength of our epoxies. It is waterproof and more heat resistant. SLOW-CURE can be used for bonding if you’re willing to wait overnight. Fillers such as micro balloons can be mixed with SLOW-CURE and FINISH-CURE to form a putty-like consistency. Such fillers will usually decrease the working time by about 25%. Bonded objects can be handled after 8 hours and the cured epoxy reaches full strength within 24 hours. Directions in 5 different languages.

Review: Epoxy works great. - I have been using Bob Smith products for many years. Their epoxy is one of the best for fabrication. I have seen some negative reviews, and would like to mention a few things to be aware of. Do not mix this in a very large quantity in a narrow container. Yes it will get quite hot and also set quicker. The mix is not real critical but should be very close to one to one. Stir well especially the slower 30 minute stuff. Stir for a couple of minutes. Use a shallow pan or dish. I use plastic condiment cups that hold about 2 ounces and are wide. I contacted the folks at BSI about shelf life. They said that the shelf life is 5 or more years. If it gets cloudy from absorbing moisture to micro wave for 15 seconds. Not sure I would try that. Another note. You can thin this a bit with denatured alcohol and use it to seal wood. I mix about 2 parts epoxy to one part alcohol and it is thin enough to brush, but will run a bit so maybe add a bit less alcohol. Stir well you will see the water released from the epoxy and it will go from cloudy to clear.
Review: Great glue!...but not 30 min - 5 stars might be heavy, but I wanted to make sure a reader knows off the bat that I love this product, and it was easier to work with than the Gorilla Glue syringes. The format is "two bottles...squeeze out the same amount from each bottle...by eyeball". The try part was easy (using it to glue T-tracks into a 3/4" workbench, where itty bitty 3/8" screws aren't strong enough on their own, given that the tracks are meant to stand up to strong pulling from a clamp). But, being "30-minute" epoxy, I splurted out a solid tablespoon of each, mixed it, and started working. After one 24' length + some nail polish remover cleanup of drips (5 minutes max), I went back to the mixture and it was too gummy/hard to work with! NOT 30 minutes of working time so I'm not sure what they're talking about. The fine print on the bottle essentially says,"the more you mix, the faster it sets"...but what's "too much"? Looks like it's somewhere below 1tbsp each. Being irritated I decided I'd send it back and run to Home Depot for more Gorilla syringes... but then decided to give it another try. I adjusted my method... used 3x5 cards... mixed about a quarter sized dollop of each bottle... mixed with little tongue depressors... applied it with the spatula end of one of those little red silicon glue applicators...and used every bit of the mix from the card. It went on smooth, it dried a little slower (maybe 7 minutes working time?) but I worked in little batches. It was smoother, less stinky, and easier to apply and clean up than Gorilla. I drilled and installed the little screws while it was wet so the screws would pick up some epoxy on the way in...and I wouldn't need to clamp it down until it dried. The dry t-tracks are in and not going anywhere. I tested it with a clamp and really wrenched it down (more than I ever would in an actual setting) and it didn't budge. I think the T-track would bend before the glue failed. Other reviewers say it lasts longer than Gorilla, which is another reason I decided to try it. Time will tell. Those two little bottles went a long way, and I was able to tackle the same amount as 3 or 4 syringes of Gorilla... so that's a big savings! I still have about 1/4 of the glue left in each bottle. High value. Just know that you need to mix in small batches, and it WILL get too gummy to work with after about 5 to 10 minutes. Oh... use painter's tape to mask the areas where it could schlop as you apply it. It cleans up easily with nail polish remover while it's still wet, but the tape saves the extra work if you're gluing a lot.

## Features

- Extended Working Time: SLOW-CURE epoxy provides a generous 30-minute working window, allowing for careful positioning, alignment, and larger project applications.
- Maximum Strength & Durability: Once fully cured, SLOW-CURE forms an exceptionally tough, impact-resistant bond - ideal for load-bearing or high-stress joints.
- Multi-Surface Adhesion: Bonds securely to wood, fiberglass, metal, glass, ceramics, and most plastics, making it a versatile adhesive for hobby, DIY, and professional projects.
- Excellent Gap-Filling Properties: Thicker formula is designed to fill gaps and bond uneven or porous surfaces with reliable hold and clarity.
- Essential for Serious Builders: Perfect for boat repairs, structural applications, model building, and demanding craft projects - SLOW-CURE delivers lasting performance where strength matters most.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0166FFFS4 |
| Best Sellers Rank | #3,204 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9 in Metal Filled Epoxies |
| Brand | Bob Smith Industries |
| Color | Clear |
| Date First Available | April 3, 2007 |
| Full Cure Time | 8 Hours |
| Is Discontinued By Manufacturer | No |
| Item Form | Putty |
| Item Package Quantity | 1 |
| Item Volume | 130 Milliliters |
| Item Weight | 3.52 ounces |
| Item model number | BSI-205 |
| Manufacturer | Bob Smith Industries Incorporated |
| Material | Plastic |
| Number of Pieces | 1 |
| Package Information | Bottle |
| Product Dimensions | 1.57 x 1.57 x 3.94 inches |
| Special Feature | Waterproof |
| Tensile Strength | 4500 Pounds Per Square Inch |
| UPC | 354123445706 007336205000 707336205085 707336205009 |
| Unit Count | 4.5 Ounce |
| Viscosity | Moderate to High |
| Viscosity Level | Medium to High |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Bob Smith Industries
- **Color:** Clear
- **Item Form:** Putty
- **Material:** Plastic
- **Special Feature:** Waterproof

## Images

![BSI-205 Slow-Cure™ Epoxy - 4.5 oz. Combined, Clear - 30-Minute Working Time Adhesive for Wood, Fiberglass, Metal, Crafts & Structural Repairs - Image 1](https://m.media-amazon.com/images/I/61EkgZk70iL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Can I use this Epoxy for adhering stones for jewelry**
A: Yes, but it will tend to not work as well for larger stones glued to flat surfaces. My wife makes glass jewelry and swears by E6000 silicone

**Q: Is the consistency runny enough to use for sealing the end grain of exterior wood?**
A: I haven't tried it for sealing end grain.  That said, I would expect it to work.  Just watch your cure time; the BSI-205 gets an initial set after some 30 minutes, but may need 12 or more hours to develop a full set.  Double-check the instructions for set time.

**Q: Does this bond metal and wood together?**
A: Yes it will bond wood and metal together.  Works best when either material is scuffed up a bit. 
Russ-Pen Kit Mall

**Q: Can this be use for filling dings on electric guitar basses? Can it then be sanded down to mirror like finish?**
A: Epoxy can be used to fill dings on almost anything. Epoxy can be sanded once it's cured. To get a mirror-like finish might require some kind of coating- paint, polish? Good Luck!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Epoxy works great.
*by R***R on July 1, 2025*

I have been using Bob Smith products for many years. Their epoxy is one of the best for fabrication. I have seen some negative reviews, and would like to mention a few things to be aware of. Do not mix this in a very large quantity in a narrow container. Yes it will get quite hot and also set quicker. The mix is not real critical but should be very close to one to one. Stir well especially the slower 30 minute stuff. Stir for a couple of minutes. Use a shallow pan or dish. I use plastic condiment cups that hold about 2 ounces and are wide. I contacted the folks at BSI about shelf life. They said that the shelf life is 5 or more years. If it gets cloudy from absorbing moisture to micro wave for 15 seconds. Not sure I would try that. Another note. You can thin this a bit with denatured alcohol and use it to seal wood. I mix about 2 parts epoxy to one part alcohol and it is thin enough to brush, but will run a bit so maybe add a bit less alcohol. Stir well you will see the water released from the epoxy and it will go from cloudy to clear.

### ⭐⭐⭐⭐⭐ Great glue!...but not 30 min
*by A***T on September 12, 2025*

5 stars might be heavy, but I wanted to make sure a reader knows off the bat that I love this product, and it was easier to work with than the Gorilla Glue syringes. The format is "two bottles...squeeze out the same amount from each bottle...by eyeball". The try part was easy (using it to glue T-tracks into a 3/4" workbench, where itty bitty 3/8" screws aren't strong enough on their own, given that the tracks are meant to stand up to strong pulling from a clamp). But, being "30-minute" epoxy, I splurted out a solid tablespoon of each, mixed it, and started working. After one 24' length + some nail polish remover cleanup of drips (5 minutes max), I went back to the mixture and it was too gummy/hard to work with! NOT 30 minutes of working time so I'm not sure what they're talking about. The fine print on the bottle essentially says,"the more you mix, the faster it sets"...but what's "too much"? Looks like it's somewhere below 1tbsp each. Being irritated I decided I'd send it back and run to Home Depot for more Gorilla syringes... but then decided to give it another try. I adjusted my method... used 3x5 cards... mixed about a quarter sized dollop of each bottle... mixed with little tongue depressors... applied it with the spatula end of one of those little red silicon glue applicators...and used every bit of the mix from the card. It went on smooth, it dried a little slower (maybe 7 minutes working time?) but I worked in little batches. It was smoother, less stinky, and easier to apply and clean up than Gorilla. I drilled and installed the little screws while it was wet so the screws would pick up some epoxy on the way in...and I wouldn't need to clamp it down until it dried. The dry t-tracks are in and not going anywhere. I tested it with a clamp and really wrenched it down (more than I ever would in an actual setting) and it didn't budge. I think the T-track would bend before the glue failed. Other reviewers say it lasts longer than Gorilla, which is another reason I decided to try it. Time will tell. Those two little bottles went a long way, and I was able to tackle the same amount as 3 or 4 syringes of Gorilla... so that's a big savings! I still have about 1/4 of the glue left in each bottle. High value. Just know that you need to mix in small batches, and it WILL get too gummy to work with after about 5 to 10 minutes. Oh... use painter's tape to mask the areas where it could schlop as you apply it. It cleans up easily with nail polish remover while it's still wet, but the tape saves the extra work if you're gluing a lot.

### ⭐⭐⭐⭐⭐ Extra working time, super strong bond
*by J***) on October 26, 2025*

I really love this epoxy. It's perfect. It gives you a lot more time to work with your project before the epoxy sets, and then forms an incredibly strong bond. It's also way more convenient to use with a larger quantity of volume in reusable bottles, far easier and cheaper than the big box store little plunger epoxy products. You just can't go wrong with this stuff.

## Frequently Bought Together

- Bob Smith Industries BSI-205 Clear Slow-Cure Epoxy (4.5 oz. Combined)
- Bob Smith Industries BSI-201 Quik-Cure Epoxy (4.5 oz. Combined),Clear Clear Original version
- Bob Smith 103 Insta-Cure 2oz Super Thin

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-02-07*