Aimed at: Professionals and enthusiasts who have a bit of nous.
Pros: Easy to use, quick setting times and multiple materials covered.
This will date me. In my youth in South Africa we had something called Pratley Putty – a two-part epoxy that I sometimes believed had magical properties because I personally repaired several car exhausts, a rigid plastic water tank (empty) and a cigarette lighter (???)
Fast forward to 2015 and Delta Adhesives has sent me a range of one-stick repair putties that appear to do roughly the same job as the Pratley Putty. But after reading the literature that came with the sticks, it is clear that this selection is a much more advanced 21st century product that is versatile and also specialized for different applications.
Altogether, I got six sticks, in no particular order: – Aqua, Steel, Titanium, Wood, Plastic and Copper. From this it is easy to gather that choosing the right stick for the right application is important.
The epoxy sticks are contained within transparent plastic tubes with instructions and safety advice printed on them. In order to use the epoxy, simply cut or twist off the required amount and knead it into a stiff putty. The catalyst hardener runs through middle of the putty and it is the kneading that activates it ready for use.
Disposable gloves are indicated because the epoxy is an irritant and care needs to be taken not to get it into your eyes. It is best if the sticks are kept at room temperature because they will knead more easily.
Once kneaded thoroughly, (don’t take too long or you will lose working time) you have roughly a couple of minutes, dependent on ambient temperature, in order to complete your repair. I found that the two minutes was more than enough for my testing applications. In fact I found that if I let the putty set a little I could “carve’ it into shape a bit and define edges etc. on my repairs.
It is a very good idea to read the individual instructions that come with each tube of putty. For example, the Aqua-Stick Putty is capable of being used in water for repairing such items as baths, boats and water tanks. The presence of water will not affect the setting of the putty into a very hard and, for all intents and purposes, permanent repair. But the “metal” putties need a little more care in application to make them stick permanently.
The metal-based putties have a self-colour that is intended to match the metal to which it is attached – hence the copper is copper coloured, the steel is steel coloured etc. etc.
When I used the wood stick to do a bit of filling on a complicated corner piece on a table, I found that the putty was able to be forced into the repair and I left it a little proud for final shaping after the epoxy had cured.
The epoxies all cut, carve and sand easily once they are cured, so with a bit of care in use, the repairs can be made strong and in many cases, almost invisible.
I think that these epoxy sticks will find many friends both in the trade and DIY sector because of their strength and usability characteristics. My old Pratley Putty only came in white and was not nearly as easy to use and shape, nor was it as strong as the Delta Adhesives Epoxy. Thank goodness for chemical engineers and progress!Every time I go on site these days I see yet another way in which builders’