Bahan Lunak Gips

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Dokumen tersebut membahas tentang bahan lunak gips yang terbentuk dari proses kimia alami kapur dan sulfat menjadi CaSO4, biasanya berwarna putih. Dokumen ini juga menjelaskan bahan dan alat pembuatan kerajinan dari gips seperti cetakan plastisin, gelas, sendok, dan silicon rubber serta teknik pembuatannya yaitu pembuatan cetakan, pembuatan adonan gips, proses mencetak, pengeringan, dan penghalusan

Education

Nama Anggota :
 Ridwan Muhamad
 Ferel Elsandy
 Vijay M
 Iistia
 Risma

Penjelasan Gips
 Gips merupakan batuan sedimen, yang terbentuk
dari proses kimia di alam dengan bantuan kapur
dan sulfat, maka terjadi senyawa baru yang
membentuk CaSO4. umumnya bewarna putih,
namun terdapat warna lain tergantung kepada
mineral pengontrolnya.

Bahan & Alat Kerajinan Gips
1.Gips
2.Cetakan dari Plastisin
3.Gelas
4.Sendok
5.Silicon Rubber

Teknik Pembuatan
 Pembuatan cetakan (acuan cetakan)
Salah satu bahan pembuat cetakan gipsum adalah silikon rubber. Silikon rubber
adalah cairan berwarna putih kental seperti susu, berfungsi untuk membuat
cetakan silikon. Apabila sudah jadi berbentuk karet silikon yang lentur persis
seperti karet. Siapkan bentuk cetakan yang sudah dibuat dan sesuaikan dengan
ukuran bentuk model. Sebaiknya, cetakan dibuat lebih besar dari model agar
hasil cetakan lebih baik dan tidak mudah retak atau pecah.
 Pembuatan adonan gips
Bubur gips dibuat dengan perbandingan 2 : 1, takaran 2 untuk gips dan 1
untuk air.Kemudian, aduk hingga tidak ada lagi gumpalan gips.
 Proses mencetak
Tuang adonan gips yang sudah homogen ke dalam cetakan, diamkan hingga
mengeras dan padat. Biarkan gips dalam cetakan tersebut beberapa lama
hingga campuran gips berubah menjadi zat padat.

 Pengeringan
Hasil dari proses mencetak selanjutnya dikeringkan. Pengeringan dengan cara
diangin-anginkan di tempat teduh dan tidak terkena sinar matahari langsung.
 Penghalusan
Model atau hasil cetakan yang sudah kering untuk selanjutnya dihaluskan dengan
menggunakan amplas halus. Model yang sudah halus bisa diberi warna atau asli
warna gips saja.

Fungsi Kerajinan Gips
Gips biasanya dapat berupa
 Gantungan Kunci
 Hiasan Dinding
 Bingkai Foto
 Mainan

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Bahan Lunak Gips

1. BAHAN LUNAK GIPS

2. Nama Anggota :  Ridwan Muhamad  Ferel Elsandy  Vijay M  Iistia  Risma

3. Penjelasan Gips  Gips merupakan batuan sedimen, yang terbentuk dari proses kimia di alam dengan bantuan kapur dan sulfat, maka terjadi senyawa baru yang membentuk CaSO4. umumnya bewarna putih, namun terdapat warna lain tergantung kepada mineral pengontrolnya.

4. Bahan & Alat Kerajinan Gips 1.Gips 2.Cetakan dari Plastisin 3.Gelas 4.Sendok 5.Silicon Rubber

5. Teknik Pembuatan  Pembuatan cetakan (acuan cetakan) Salah satu bahan pembuat cetakan gipsum adalah silikon rubber. Silikon rubber adalah cairan berwarna putih kental seperti susu, berfungsi untuk membuat cetakan silikon. Apabila sudah jadi berbentuk karet silikon yang lentur persis seperti karet. Siapkan bentuk cetakan yang sudah dibuat dan sesuaikan dengan ukuran bentuk model. Sebaiknya, cetakan dibuat lebih besar dari model agar hasil cetakan lebih baik dan tidak mudah retak atau pecah.  Pembuatan adonan gips Bubur gips dibuat dengan perbandingan 2 : 1, takaran 2 untuk gips dan 1 untuk air.Kemudian, aduk hingga tidak ada lagi gumpalan gips.  Proses mencetak Tuang adonan gips yang sudah homogen ke dalam cetakan, diamkan hingga mengeras dan padat. Biarkan gips dalam cetakan tersebut beberapa lama hingga campuran gips berubah menjadi zat padat.

6.  Pengeringan Hasil dari proses mencetak selanjutnya dikeringkan. Pengeringan dengan cara diangin-anginkan di tempat teduh dan tidak terkena sinar matahari langsung.  Penghalusan Model atau hasil cetakan yang sudah kering untuk selanjutnya dihaluskan dengan menggunakan amplas halus. Model yang sudah halus bisa diberi warna atau asli warna gips saja.

7. Fungsi Kerajinan Gips Gips biasanya dapat berupa  Gantungan Kunci  Hiasan Dinding  Bingkai Foto  Mainan

8. Terima Kasih

�ݺ�ߣ

Bahan Lunak Gips

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Bahan Lunak Gips