Excuse me, but I am a beginner and I'm wondering what the big secret about these mixes. I am trying to find a cost effective way to learn this wonderful trade. I am not trying to take over someones business, just adding a nice touch to my home. Can I make a mix from materials from Home Depot that compare to those listed above. Any input is appreciated. It just seems that this is such a big secret.
The secret is really simple.
3 parts sand
1 part cement
add water and you have a cement base.
All the other products simply refine from there. Whether it is a light weight or for thin or thick applications stamping or carving.
The urban craftsman recipe is found on the VA subscription site under the news articles ( industry secrets )
Most of these mixes simply have components that make the product work to the desires of the artist carving them.
Home Depot --- Try a bag of sand topping mix mixed with a bag of mortar.... You can sculpted with that. It is not going to perform with all the elegance of some of the other mixes but what is it that you are trying to do.
You can drive to the park in a BMW or a Honda...the drive is the same but the look will be different.
Jeff, how can i get my hands on a bag of your mix? Will i need to buy polymer for the mix mentioned above?
jeff kirt said:
ya kyle, nathan is right. Every mix out there is just a sand cement base, as nathan stated. There are alot of ways to tailor those mixes to your style and taste. The pre bagged mixes have already been tested through time and practice and are ready to go. Some are more expensive than others. It just depends on the job and your taste. Some mixes can be used inside only, and some can be used for in and outside. You can hone your skills with a bag of mortar mix and add a cup or two of cement. It will be cheap and allow you to not go broke practicing. Good luck .
Thanks Jeff I 'll try that , so 80 lbs type N 3- 4 gallons perlite to 2 cups of polymer? how much more cement
The reason Im experimenting w/much Perlite , is so I can make a display for an up coming trade show (light weight).Any suggestions. Foam block are 4 hours away
The recipe above is a good place to start, or try starting with a premix like "Spec-mix"(Home Depot-Lowes) and experiment by fortifying it with different aggragates, such as: Calcium Carbonate, perlite, vermiculite, hydralated lime, masonry clay, silica sand, pumice sand, cement, etc. To slow the setting you can use carbohydrates such as corn starch or sugar, then there are the store bought retartders. you might want to try a fiber addative as well. PVA Poly Vinyl Acetate will help as a primer and addative as well. Take your time and write everything down so that you may reproduce it again. You will find the the easiest is to just buy a mix , but if you are like me and the material is just not avilable or just want to try- go ahead and try.
For further reading try: "Concrete admixtures handbook: properties, science, and technology" By Vangipuram Seshachar Ramachandran. Try you local college library.
Hope it helps. Sign up at Vertical Artisans and check out Nathan"s video about his trip to Mexico and see what can be done with minimal materials. Hope this helps.