Article in English: A planer is a power tool with a flat head that helps to even out a surface. Run the planer around the top and bottom perimeters of the stump to remove any rough spots. Do this until the top and bottom edges of the stump are smooth to the touch. Use a broom or cloth to wipe off any debris after you have finished smoothing the edges. Rub the sandpaper on the top of the stump in a circular motion, removing the top layer of wood. The sandpaper is also a great way to even out the top of the stump so the grain is level. Then, rub the sandpaper on the bottom of the stump, removing the top layer.  If you removed the bark around the stump, you will need to sand the sides of the stump down as well. Rub the stump from top to bottom with the sandpaper to smooth out the sides. Wear gloves when you use the sandpaper to protect your hands. The electric sander is a great way to smooth out the top and bottom of the stump quickly. Run it back and forth over the top and bottom of the stump, revealing the fresh wood underneath. As you sand the stump, you should notice the rings in the wood appearing on the top and bottom. This means the fresh wood is emerging. Once you have finished sanding the stump, remove wood dust with a cloth. Give the top and bottom of the stump a good wipe so the wood appears clean and fresh. If you sanded the sides of the stump, you should wipe this area down as well. If the stump has any large or deep cracks that you do not want to keep, you can fill them with a wood filler like clear epoxy. Put tape on the sides and bottom of the stump, below the cracks, to prevent the epoxy from leaking out of the cracks. Then, drizzle the epoxy into the cracks to fill them.  Apply 1 layer of epoxy to fill the cracks and let is dry overnight. Wear gloves when you handle the epoxy, as it is a strong chemical.

Summary in Indonesian:
Haluskan permukaan tunggul dengan ketam listrik. Gunakan kertas ampelas grit 80 untuk menghaluskan bagian atas dan bawah tunggul. Gunakan mesin ampelas listrik jika tunggul sangat kotor atau kasar. Seka tunggul dengan kain lembap tanpa serat. Isilah celah pada kayu dengan dempul.