See full version: Does pc 11 marine epoxy cure hardened
Additive epoxy curing accelerators are available and may give a better finish when dried but beware as they make leave some yellow tint as a side effect of faster curing time. Accelerators must also be matched with the type of epoxy being used to maintain the integrity of the bond and finish.
The epoxy hardening/bonding process relies on a correct mixture ratio of 1:1 hardener vs. resin, and though it may sound like a good idea to increase the hardener amount – this is ill-advised – and may cause parts of the resin to not cure at all or for parts to remain sticky indefinitely. The same is true of adding any additional elements to the mixture in an effort to speed up the process.
However, "Sunlight and temperature are the main factors that affect curing time of most epoxies. The warmer your epoxy mix, the shorter the curing time. You can manipulate epoxy curing by speeding up the reaction by adding heat or slowing it down by making the environment cooler," from DoItYourself.com. Conversely, you can extend the amount of time that epoxy may be manipulated by working in a cooler environment or by working in the shade. [links]
Some projects are time sensitive – and therefore require quicker processing time for the steps required. One of the challenges in any endeavor is speeding up any of the tasks in the process if possible. Curing epoxy resin more quickly may be accomplished if done correctly to help meet deadlines… here
An epoxy curing oven may be employed, but should really only be used after the mixture has hardened via its inherent curing process. (So not really a time saver)! These ovens are employed in specialty processes such as aerospace uses and utilize two-step curing systems – the second part of which is oven curing. Most art, DIY and non-industrial epoxy resin applications don’t require an oven – and frankly are better off without this step. Extreme temperature can, in fact, be detrimental to curing. here
For most residential applications, the 24-hour curing time is fine for artistic and home project use; while a longer 72-hour curing time should be implemented for hardier business uses such as counter and bartop coatings. Remember though, in epoxy resin curing, heat is a byproduct of the process, and the polymer takes time to harden correctly. Working in a warm environment with warm materials can help move things along a bit more efficiently.
Mixing Tips:
In cold or cool temperatures, place PC-11� containers near heat prior to using. PC-11� mixes and spreads easier at 80�F than at 40 F. Any clean smooth flat surface is an excellent surface for mixing and working. A small putty knife or flexible artist spatula are great tools for mixing and applying PC-11�.
How to tint PC-11�; Critical Applications, TEST FIRST!
Pigments come in three forms: powder, paste, and liquid.
Powder pigments are by far the pigment type of choice. Powder pigment is preferred because less is needed to reach desired color.
Paste pigments are an option if powders are not available. With paste pigments bold colors may not be achieved. DO NOT exceed more than 5% volume of combined A(white) and B(pale blue). More than 5% will affect the integrity of the chemical properties of PC-11� and is not recommended.
Liquid pigments are not recommended (example � food dye).
1. Measure equal amounts of part A (white) and part B (pale blue).
2. Mix the pigment into part A (white) until preferred color is achieved. Exact color matching is difficult and may require assorted pigment colors.
3. Combine part A with part B when the desired color is reached.
After cure: Paint Drill, Machine, Sand, File, Tap, or Saw. [links]
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Epoxy is a permanent adhesive used on many types of surfaces, from plastic to metal. Once epoxy has hardened, removing it can be tricky. Epoxy starts in a liquid state. As it is mixed, the substance’s temperature heats up until it starts to cool off and harden. You can remove epoxy by getting it back to a liquid, or at least gel-like, state so that you can scrape it from the surface. Removing epoxy can be accomplished relatively easily, as long as you take the proper safety precautions and are patient.
Woody 106 grams A to 100 grams B
PC-Woody® is a two part epoxy paste that is excellent for filling cavities in wood. Make permanent repairs without shrinking, cracking or popping out of exterior wood. Sand, drill, nail, prime and paint or stain. Bonding filler for replacement wood. Not brittle. Easy 1:1 mix ratio (see: How to Mix PC-Woody). more
When measuring equal parts “A” and “B” we generally recommend eyeballing the amounts (see: How to Measure PC-Woody) but if more precise measurements are desired, based on an average net weight for each size unit we have:
Here are just a few specific uses (there are hundreds of other uses):