I am making a plate with some polyester resin. According to the instruction on the back of the resin can, the amount of needed hardener per ounce of resin increases as resin plate becomes thinner. I am having hard time believing the ratio moves like that. Is my understanding correct at all?
Read the directions. There are some things in common and some differences. Don't know how long. It should quit beeping within a reasonable amount of time after pressing the test button. It should beep within a reasonable amount of time. If either condition seems unreasonable or does not happen, then get another detector. There are three types of smoke detector and a couple of heat detectors. One detector uses nuclear radiation. When radiation is blocked by the smoke, the radiation detector does not detect the nuclear radiation. Then the detector alarms because of the smoke. There is a photon type detector. When a light beam is broken by smoke, the alarm goes off. The third type combines the two detectors into one unit. A heat detector sounds an alarm when the temperature gets high enough indicating a fire. It is much less common. Get to know your detector. Read the manuals. Don't open the radioactive ones. They are safe inside the enclosure. After all, all it takes is a little smoke to block the radiation. But direct contact is dangerous.
You hold the button in for about 3 seconds and it should start beeping. The beeping should stop when you take your finger off of the button. Another way is to hold a lighter up to it and let it go off naturally. It will eventually shut itself off, but takes longer if you use that method to test it.
hold the button then let go it will sound for couple min's it will stop by it self
Liquid resin is pretty heavy, you would definitely want to buy it in person because it would be expensive to ship. We used it a lot in the 70's for paperweights keychains and stuff. It's a lot of fun. Your local craft store will have it. It will come with instructions. .
