I have bought a table tennis table for nine months which is a Donic brand. Now when I fold it, I noticed that the plate is quite distorted. If you hold both parts upright, there is a gap in the center of about 2 cm, it is suspended in the center by 1 cm. With all these in questions, I did have some doubt about the quality of the table that I get.
I would think that the table bends/warps is not normal but rather is a lack of material. I tried to do some searches on Google for the table and I did quickly come to notice that there are certain restrictions on the area. Some tables are only suitable for dry rooms within a building, some are not resistant to heat, cold, direct sunlight and moisture (relative humidity about 60%); while some cannot place outside the house like backyard or garage; and some are not resistant to sunshine, no high humidity and etc. The temperature at corridor however is not defined any further.
I have been checking on the installation of panels in the hall. I always observe that plates are “sloppy” adjusted – or not at all. Mostly fast to see the ball is rolling to one side.
Since I place the table tennis table in the basement and the basement is generally considered to be a wet room, I would be able to measure the humidity in the basement is about 40% – 50%.
I have tried to complain to the table supplier where I bought it from. Cause the table just being used for nine months and there is already has distorted which is quite unaccepted for me. I have provided them with credibly assurance that my basement humidity is always under 60% and therefore, according to the installation conditions nothing to the fact that the plate can get distorted.
I also make some measurement on the edges to see if they are different. As I know if all are equal, there is not much evidence that moisture has penetrated because this is probably not a veneered chipboard. When the moisture draws, the edges got swelling, which then was creating small gaps between the veneers. But through my measurement, I didn’t get any, it may indicate that the plate has not drawn moisture and the error therefore existed from the beginning.
My reasoning therefore be that the disk is suspended in the middle because of a material error. Either the plates were not planed from the beginning, or they are now hiding because the presspan is not compacted enough or the plate is too thin. I did measure that the plate is of the same thickness, the edges look fine, so I do not assume that it has drawn much moisture.
It is unlikely that the plate is sagging. But it is annoying. Since I do not think to be successful with a complaint, and then, assuming that a substitute table looks exactly like this again after nine months, I will probably go for a DIY solution and get me 4 wood chippings for me to put under the middle of the plate so that it is also supported there. This is probably sufficient for our concerns. If for tournaments we will not be playing in our basement anyway.
I did consult to my friend who happened to be a carpenter and he told me that an indoor plate is usually quite susceptible to moisture and should therefore only be stored in fairly dry rooms. When the damage first happens, it depends on whether it is still playable. He asked me if I still can play a “straight” ball, or does the ball come off the course without a spin? As the table is getting distorted, of course now I am not able to play a “straight” ball. Of course, it is now depends on my game needs. Since I only play at basement with friends and family for our leisure, a slightly slanting plate does not make a difference to the game, just I still feel not so good with a table that I pay for but getting a not so perfect product in return.