1. Whether the strength of the stairs meets the requirements is the most important. You can shake the armrests to see if there is any shaking; check the connection between the small studs and the treads, if there are obvious gaps; now many small installation teams use ordinary glue to bond the stigmas, but the strength, anti-oxidation and moisture resistance of ordinary glues are If it does not meet the requirements, it will be easy to loosen after a long time. This needs to be noticed during installation. It is difficult to find after completion.
2. The connection of the handrail turns. The connection here requires considerable technology. If the craft is not good, there will be obvious gaps. Although the paint can be put on the putty paste, there is no tight connection between the woods, and it is prone to looseness and cracks in the future, especially the arc type. The connection of the curved armrests requires special attention.
3, the size of the material, many of the so-called small stigma purchased from the market, many have the problem of insufficient size, some selected wood grade is also poor, the hardness is not high enough, the size can be measured by measuring tools, the hardness is more difficult to know, You can use the nail file to see if there is any obvious indentation, or to measure the amount, but you need some experience, you can know more than some other wood.
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