UMS "Agram" : Andrija and Marko’s Top Tip < Articles < Hobby

Andrija and Marko’s Top Tip

Andrija Jurišić, 24th July 2020

What is Marko up to? He is building a mould from balsa wood to cast some wall pieces in plaster. Using superglue and PVA glue he is making the mould.

Marko's brilliant plan is to save money on plaster by using a cheap one and strengthening it with PVA glue.

Unfortunately, the PVA glue in the plaster mix bonded with the balsa wood so Marko can no longer remove the plaster cast from the balsa wood mould. That is why he asked his pall, Andrija, for help. Together they came up with an idea. Since plaster does not burn, and balsa does, they tried to set the balsa on fire – figuring that once the balsa has burned into ash, all that will remain would be the plaster cast. However it did not work.

Then they came up with another brilliant idea of a foolproof plan. Soak the thing in nitro and then burn it. It did cause a bigger flame and more smoke. However, the balsa got only singed. The water from the plaster mixture got absorbed in balsa wood preventing it from burning.

Top tip: Don't be a plonker like Andrija and Maro. Buy proper plaster and do not mix PVA glue if you want to cast it!

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Krunoslav Belinić, 13th October 2025

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Marko Paunović, 13th October 2025

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Marko Paunović, 2nd October 2025

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Krunoslav Belinić, 2nd October 2025

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	Za više fotografija posjetite naše socijalne mreže!
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