CreteSheet CreteSheet MIX IT UP

CreteSheet Owner’s Manual

The World’s Simplest Concrete Mixer · SDS Designs, Inc.

Documentation set
2003–2009 · 15 chapters

Chapter IndexSpecificationsMixing RatiosCatalogueArchives
Manual home · documentation set 2003–2009

CreteSheet Owner’s Manual

SDS Designs, Inc. · 15 chapters in 5 parts · concrete mixing and garden molds

Overview

Labelled diagram of the square mixing sheet showing the four bonded corner handles and the spout formed at one corner when the sheet is tilted.
Figure 2. Sheet construction and handle positions.

The CreteSheet is a durable, square-shaped plastic sheet created for one or more people to use in blending dry materials, dry materials with liquid, and particularly for mixing and pouring their own concrete. It suits any do-it-yourselfer regardless of age or strength, and its lightweight construction allows easy transport to and around the jobsite.

It also serves as a back-up tool for the professional contractor, particularly on small jobs. This manual collects the specification, the mixing sequence, the mixing ratios, the Garden Molds directions and the catalogue record into fifteen numbered chapters.

Start Here

  1. Mixing your first bag of concrete on the sheetChapter 2
  2. Checking the sheet’s material, gauge and capacityChapter 1
  3. Working out how many bags a slab will needChapter 7
  4. Casting stepping stones in a garden moldChapter 6
  5. Looking up a listed price or a mold dimensionChapter 9

Mixing Procedure

Seven small diagrams of the mixing sheet in sequence, from lying flat on the ground through to being rinsed clean with a hose.
Figure 1. The seven-step mixing sequence.
  1. Lay the CRETE SHEET on the ground.
  2. Place the dry cement mix or materials to be mixed onto the center of the sheet.
  3. Raise up the corners using the specially made handles, leaving material resting on the ground.
  4. Pour the appropriate amount of water or liquid (all at once or in smaller amounts) into the mix.
  5. Alternately lifting the handles, tumble mixture back-and-forth from corner into the center of the sheet.
  6. Tilt the CRETE SHEET and pour into the desired area.
  7. Rinse with a hose for clean-up or discard.
HintIf possible, a water hose with a spray nozzle is an excellent tool to have near a mixing location. A hose can aid in mixing by adding water in small amounts until concrete consistency is met.
CautionIf too much water is added the mixture will be soupy, decreasing the strength of the concrete.

Quick Reference

Recorded working figures, collected from Chapters 1 and 7
QuantityRecorded figure
Sheet material5–10 mil linear, low-density polyethylene
CapacityOne 80 lb pre-bagged mixture
Water guideApprox. 1 gallon per 80 lb bag
YieldApprox. 2/3 cubic foot per 80 lb bag
Manual batch by volumeRoughly 10% cement, 20% water, 30% sand, 40% gravel
Time in formsAt least 24 hours

Chapter Summaries