2 Minor improvements.
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Concrete casting: acrylic sheets inside styrofoam box to improve reuse form

I am looking into casting a few small concrete blocks to build some steps which I will reconfigure over time.

I've found a styrofoam box which gives me the shape I'm looking for, and I'd like to find a way to build a form which I can reuse in order to produce as many blocks as I would need.

Since styrofoam can be broken easily and all the examples I studied for casting concrete with styrofoam forms involve breaking the forms after casting only 1 object, I started thinking about using acrylic sheets to build a small box inside the stryrofoam, with the hope that I can slide out that acrylic form after casting, take it apart to retrieve the block, then put it together again inside the box.

I have 23 questions: - Is acrylic a good material to use for concrete casting? - Might there be a better way to improve reusability of a styrofoam form?

  • Is acrylic a good material to use for concrete casting?

  • What can I do to minimise the chances of the acrylic sheets sticking too much to the concrete object such that I might risk snapping them?

  • Might there be a better way to improve reusability of a styrofoam form?

Concrete casting: acrylic sheets inside styrofoam box to improve reuse

I am looking into casting a few small concrete blocks to build some steps which I will reconfigure over time.

I've found a styrofoam box which gives me the shape I'm looking for, and I'd like to find a way to build a form which I can reuse in order to produce as many blocks as I would need.

Since styrofoam can be broken easily and all the examples I studied for casting concrete with styrofoam forms involve breaking the forms after casting only 1 object, I started thinking about using acrylic sheets to build a small box inside the stryrofoam, with the hope that I can slide out that acrylic form after casting, take it apart to retrieve the block, then put it together again inside the box.

I have 2 questions: - Is acrylic a good material to use for concrete casting? - Might there be a better way to improve reusability of a styrofoam form?

Concrete casting: acrylic sheets inside styrofoam box to reuse form

I am looking into casting a few small concrete blocks to build some steps which I will reconfigure over time.

I've found a styrofoam box which gives me the shape I'm looking for, and I'd like to find a way to build a form which I can reuse in order to produce as many blocks as I would need.

Since styrofoam can be broken easily and all the examples I studied for casting concrete with styrofoam forms involve breaking the forms after casting only 1 object, I started thinking about using acrylic sheets to build a small box inside the stryrofoam, with the hope that I can slide out that acrylic form after casting, take it apart to retrieve the block, then put it together again inside the box.

I have 3 questions:

  • Is acrylic a good material to use for concrete casting?

  • What can I do to minimise the chances of the acrylic sheets sticking too much to the concrete object such that I might risk snapping them?

  • Might there be a better way to improve reusability of a styrofoam form?

1
source | link

Concrete casting: acrylic sheets inside styrofoam box to improve reuse

I am looking into casting a few small concrete blocks to build some steps which I will reconfigure over time.

I've found a styrofoam box which gives me the shape I'm looking for, and I'd like to find a way to build a form which I can reuse in order to produce as many blocks as I would need.

Since styrofoam can be broken easily and all the examples I studied for casting concrete with styrofoam forms involve breaking the forms after casting only 1 object, I started thinking about using acrylic sheets to build a small box inside the stryrofoam, with the hope that I can slide out that acrylic form after casting, take it apart to retrieve the block, then put it together again inside the box.

I have 2 questions: - Is acrylic a good material to use for concrete casting? - Might there be a better way to improve reusability of a styrofoam form?