Making a cave - Page 4 - Tropical Fish Keeping - Aquarium fish care and resources
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post #31 of 34 Old 12-19-2006, 04:07 AM
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A few online fish stores sell it, I got mine from eBay for a decent price.

ʎɐqǝ uo pɹɐoqʎǝʞ ɐ ʎnq ı ǝɯıʇ ʇsɐן ǝɥʇ sı sıɥʇ
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post #32 of 34 Old 12-19-2006, 11:10 AM
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Nearly all non aquarium silicone will have fungicide in it !!!!!!

May I suggest considering black silicone for making caves etc, if you can see a bit it tends to be less noticable.

The process for heating plastic and letting it sag over a shape to produce differing mouldings is called "drape forming" You should be able to achieve this quite easily at home. Most manufacturers sheet acrylic (regardless of trade name) becomes workable around 140/150 deg C. To avoid any chance of accidents set your oven to no more than 150 deg C in the first place and work up if it's not hot enough. In order to get a nice "form" it's important that you heat whatever you are using to drape over to the same temp as the oven prior to placing the plastic on it. This helps keep the temp even throughout the forming process. It is really important if you want a regular shape as differing temps through the material cause warping.
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post #33 of 34 Old 02-09-2007, 12:35 AM
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I build r/c model planes and have used 2 liter bottles to make engine cowling as well as canapy covers, what i did was first make a mold out of hardwood to the desired shape i needed then take a 2 liter bottle or similar bottle and place it around the mold.Then take a high temp heat gun and simply heat the plastic witch causes it to shrink around the mold.I believe you could find a nice looking stone of some sort and perform the same thing with good results.You could lightly coat it with silicone then roll it in some sand to give it a thicker look then add gravel to it.
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post #34 of 34 Old 02-13-2007, 10:48 AM
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paint you can use

you can use water based acrylic,none toxic.Use a none toxic undercoat for acrylics.Leave to dry for at least 24 hours. You can also use none toxic Fed Foam to make your own caves,of any style or shape.Just remember that it must be sprayed onto something heavy to weigh it down for it is very buoyant . For instance a blue brick which you can bury in the substrate.Paint it with the above
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