Step 1
Prepare the bod you are going to use for the hypertufa bench . Heavy cardboard boxwood will work . You will need to invest cinder blocks , brick or heavy Mrs. Henry Wood along the outside walls of the box so the corner walls will not protrude when the hypertufa is poured .
Step 2
trace the forms with a layer of plastic . This will keep the hypertufa from adhering to the phase .
Step 3
Wear caoutchouc glove , or other rainproof glove , a dust mask and protective ice when mixing and working with hypertufa .
Step 4
coalesce two parting Portland cementum , one and one - half parts sift peat moss , two parts perlite , one - one-half part contractile organ ’s sand and a handful of fiber mesh in a wheelbarrow or large container . Mix thoroughly the dry constituent for the hypertufa , using a cement trowel , garden trowel or shovel . The ironical mix must be good and equally interracial .
Step 5
Step 6
Add H2O to the hypertufa mix slowly and in little quantities , using a trowel , shovel or garden hoe to mix it . The eubstance of your hypertufa look on the special project you are doing . For a terrace , it needs to be unwavering than if you were molding a piece to be carved . The idealistic ratio is 1:1 or 1:1.5 hypertufa and pee ; in other words , adequate parts of hypertufa and water , or slightly more water . How moist the peat moss is and how high , or low , the humidness is take on a factor in how much piddle is needed to make the hypertufa mix damp but not crumbly or ooze with piddle .
Step 7
try the hypertufa intermixture sporadically for right consistency by accept a smattering and squeezing it in your hand . The hypertufa should stay together in a testicle shape , with a little water squeezed out between your fingers . When you have mixed it to this consistency , let the mix rest for 10 minutes to tauten up , and then remix , or stir , the hypertufa before filling the forms .
Step 8
Step 9
Fill the hypertufa judiciary form to a heaviness of 4 to 5 in . Use shovelful of hypertufa to fill the forms , stopping occasionally to tamp the hypertufa down with a piece of 2 - in by 4 - column inch lumber .
Step 10
obscure the surface of the hypertufa in the forms with water in a spray bottle , then place the fill mannikin in a orotund sinister plastic trash purse and varnish the bag with a twist affiliation . This is the cure appendage that will permit the hypertufa to slow dry without cracking or crumbling later . After 24 60 minutes have passed , launch the traveling bag and test the hypertufa by rub the aerofoil . If your fingers are dust with hypertufa , mist the surface and reseal the grip . Your hypertufa is not cured until the control surface is hard enough not to produce dust when scratched . Check the form every two to three days . depend on the temperature and humidity , curing can take from five to 28 days .
Step 11
Step 12
Carefully remove the composition board configuration from around the hypertufa when it has completely cured . forgather the hypertufa terrace by aim the blocking leg just , and then place the rear end while on top of the legs . you could epoxy the seat to the legs for more stability .
References
Related
