Excuse me, solid wood desk, drawer is also solid wood, that solid wood is suitable to use the guide rail? Usually not
If you put something light, make sure you use a bit of the guide rail, for example, the three stage type, the drawer can not pull directly, free of time derailed long
Look at your drawer, put nothing more, heavy not heavy, too heavy, it is better to use solid wood rail or no guide solid wood furniture, although the beginning is not very good pull, but the longer the time, pull the more slippery.