Someone recently asked if our release agent can be stored outside in the cold. The short answer is "no." According to the Material Safety Data Sheet (MSDS) the release should be stored in a cool/dry location. Do not allow it to freeze, as the product may be damaged. And store it away from sparks and open flame.

Here is a link to the MSDS. This comes with every pail and drum of release we ship out. But, just in case you need it right now, here it is:

 Download World Block Plus MSDS here

Knob Style Blocks   

Just about the simplest block form out there, the knob style block form makes life easy. With two knobs on top fitting into two knobs on the bottom, these blocks fit together like giant Legos®. Knob Style block are 24”x24”x48” and require 16 cubic feet of concrete (making a 2,400 pound block) This block is purposely built half as wide as they are long. Because of this, turning a corner does not require buying extra forms or pouring special blocks. The knob placement and block dimensions allow you to simply turn your block 90° at a corner and maintain a running bond. The forms are built as two “L” shaped halves that lock together with heavy-duty, over-center locking clamps for easy set-up and stripping. The clamps can be used as levers to help you pop the form open after the block has cured. This design allows you to get many pours per day from one form. After your first pour has set, strip the form and leave the block to cure. Then set the form up and pour again. Depending on your mixture you can get two, three, even four blocks per day from one form. The blocks are poured face down. After stripping, grab the liftpoint and tip upright. To make a more decorative block use a form liner . These durable urethane liners are placed on the bottom of the form to create decorative stone patterns on the face of your blocks. Half blocks can be created in two ways: in a separate form or with a blockout. The blockouts fit inside your existing, full form allowing you to pour in half of the form. The only disadvantage to using a blockout is that it will tie up your large form for at least one pour. If you do decide to use a half block blockout, two holes will have to be drilled in the top knob of the form to hold the rubber liftpoint blockout. When not pouring half blocks, a piece of duct tape will cover the holes perfectly. Similarly, top cap blocks can be made with either a form or a blockout. And the same rules apply - if you use a blockout you tie up a form. You can also create half top caps. When you reach the end of a wall it can sometimes look better to slope the wall down rather than end it abruptly. For these instances we offer a Sloped End Blockout that fits securely into the corner of the form. You can create right and left slopes by moving the blockout from one corner to the other. With the form’s ease of use and the block’s simple functionality, it is no surprise that some of our most popular block forms are knob style.