I have made many formed concrete items including stair treads, and countertops. If you are doing this a lot, make yourself a vibrating table. You can buy a pneumatic vibrator that can be bolted to the underside of a table on which you put your forms. This will solve the porosity issue. Do not use more water in the mix. Using too much water will weaken the concrete.
I believe there are multiple issues with this first attempt. As marvinfunk3328 stated, you need a release agent, secondly; some reinforcement wire should be placed in after half of the concrete is added to the form, then add the remainder of the concrete. Lastly; I believe you added too much water to your mix and it needed to dry longer. Also removing the form should be done on a solid surface. With just a few minor adjustments you should be good to go! Thanks for sharing your experience!
You must incorporate a "release agent" on the form prior to pouring the concrete- used restaurant vegetable oil is an inexpensive product- just brush or roll it on prior to poring.
These plans have been around since the 1950's in various gardening books. The person you are thinking of didn't come up with this. Mother Earth News had the plans to do this in the 70's.
What a waste of 20 min, get to the point! And that looks like that because you aren't mixing it enough... run a shovel back and forth on the form for it to settle better, can also use vibrations from a sawzall with no blade to vibrate and make it smoother. Cool idea, work on your editing to get to the point and all is good!
I appreciate when people show when there is a failure.
I have made many formed concrete items including stair treads, and countertops. If you are doing this a lot, make yourself a vibrating table. You can buy a pneumatic vibrator that can be bolted to the underside of a table on which you put your forms. This will solve the porosity issue. Do not use more water in the mix. Using too much water will weaken the concrete.
I believe there are multiple issues with this first attempt. As marvinfunk3328 stated, you need a release agent, secondly; some reinforcement wire should be placed in after half of the concrete is added to the form, then add the remainder of the concrete. Lastly; I believe you added too much water to your mix and it needed to dry longer. Also removing the form should be done on a solid surface. With just a few minor adjustments you should be good to go! Thanks for sharing your experience!
You must incorporate a "release agent" on the form prior to pouring the concrete- used restaurant vegetable oil is an inexpensive product- just brush or roll it on prior to poring.
Perfect I think I’ll try now
Good experience =) Cool !
Atlanta give props to who you got yhr plans from
M-A-T
These plans have been around since the 1950's in various gardening books. The person you are thinking of didn't come up with this. Mother Earth News had the plans to do this in the 70's.
what are the form dimensions?
What a waste of 20 min, get to the point! And that looks like that because you aren't mixing it enough... run a shovel back and forth on the form for it to settle better, can also use vibrations from a sawzall with no blade to vibrate and make it smoother. Cool idea, work on your editing to get to the point and all is good!