For jobs requiring more than about 30 bags consider ordering ready mix concrete from a truck instead.
Make your own concrete fence posts.
I find that pieces of 2 by 6 actually 5 1 2 inch squares make perfect caps.
Center the rectangular post form on the piece of plywood by measuring all sides from the edge of the plywood.
This video shows how concrete fence posts and concrete panels are made.
To concrete a small fence post or repair an existing concrete path it makes no sense to mix up a great load.
Fence posts are reinforced with steel and should not be attempted diy.
Making concrete fence posts is a fast weekend project once you have the easy to build forms.
Or you can make your own caps from shop scrap.
Concrete is a no no for fence posts may 12 2012.
The forms do not take up much room for storage and you can make multiple forms by following a few simple steps.
This does not even happen in a purpose built factory so there is no way it will happen in your garden i m afraid.
The calculator below will help you work out exactly what you will need for your project.
If you are only needing a small amount e g.
You can use it for fence post footings deck footings and even small concrete pads.
Bags of concrete mix are readily available at home centers lumberyards and hardware stores.
Take into account your time some breaking the cost of making the mould the concrete the reinforcement bar then it may be a bit cheaper but depends on how much you value your time.
Water gets into concrete its unavoidable and absolutely certain if the posts are made diy as the concrete needs to be vibrated in a way which removes all air.
This will be the base of the concrete form.
To these ends your local diy shed should stock a range of ready mixed diy concretes ideal for this job.
An application of copper naphthenate wood preservative is essential if you are making your own fence posts from fresh cut wood and should be applied liberally over the entire fence posts.
Thompsons fencing allows us to set how the molds are prepared and poured using their.
You also need to use the right mix and aggregate since they dont make them out of normal ballast its a lot finer.
These pine concrete post forms can be used over and over again.