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Second, the wood should be clean, flat, smooth and not bent before the puzzle.
3. Prepare the pressurized equipment and other clean, non-aqueous tools before preparing the glue.
Fourth, the glue and curing agent mixing must be fully stirred, the application of weighing weight, such as the amount of cups, the first time must be first weighed and then poured into the measuring cup, and then draw a good position, the next time according to the first serving The ratio of the position to the amount (because the curing agent is heavier than the water-soluble amount) is the weight rather than the metering volume.
5, the minimum ratio of glue and curing agent is between 10:1.5-10:1.8, and it is used up within 2 hours after mixing, but it is better to use as much as possible, and use it best in 4 hours or so. If it is found that the bubble phenomenon is normal, the microbubbles can continue to be used. If too much foaming, please use a clean wood strip to stir a few times, the bubbles will be dipped, and can be reused.
Sixth, the base of the board should be evenly coated. Gluing, boarding, pressing speed, or the surface layer will be solidified, affecting the effect of the board.
Seven, if you fight a large board, try to apply thick glue, anti-surface curing, the amount of glue is about 300G / m2, after the board is pressed, both sides must have glue to flow out, no glue is abnormal, easy to open glue .
8. After taking the glue or curing agent in the packaging drum, pay attention to the bag mouth or cover to prevent contact with the air for a long time to avoid failure.
Nine, the pressure should be balanced during pressurization, pressure: cork 6-10KG/Cm2, hardwood 10-15KG/Cm2.
10. The longer the pressure relief time, the better. If the pressure is long, the small-area plate can be relieved after 2 hours. The large-area plate is preferably relieved after 5 hours, but it must be after the pressure is removed. After about an hour, the water gel is completely cured in dry weather for 24 hours.
11. Apply tap water to clean the tools after work. Use tools that are clean and not hydrated when you go to work. Try to prepare as many tools as possible (such as donkeys and rollers).
Twelve, if you need to test the best, please do it after 3 days of spelling. Test method: Put the puten into the tap water for 1-2 days, then take it out and dry it, then try the tension and strength.
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lntelligent toys, as the name suggests, are toys that allow us to develop intellectual growth wisdom in the process of playing. Does the educational toy really have the function of puzzle? According to research by the Royal Academy of Sciences, people who often play with educational toys are about 11 points higher than those who don't play. The brain has a high open thinking ability; American medical experts also found that the incidence of Alzheimer's disease in adults who started playing adult educational toys before the age of 50 was only 32% of the general population, and the incidence of people who played educational toys from childhood was less than 1% of the incidence rate in the general population.Educational toys also include Plush Toys.
In fact, in addition to developing intelligence, educational toys have more functions. For example, the development of stimulating functions, the attractive educational toys can stimulate the child's vision; the "small piano" that emits various animal sounds can stimulate the child's hearing; the rolling colored balls can cultivate the child's sense of touch. Therefore, different educational toys are effective tools to help children understand the world, help them to respond to various sensory reactions, to contact and recognize novel things.
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