When screws are driven into soft wood and subjected to considerable strain, they are likely to work loose; in such case, dip the screw in thick glue before inserting. When buying screws, see that the heads are round and well cut; that there are no flaws in the body or thread part, and that they have gimlet points. A screw of good make will drive into oak as easy as others into pine, and will endure having twice the force brought against it. When there is an article of furniture to be hastily repaired, and no glue is handy, insert a stick a little less in size than the hole for the screw and fill the rest of the cavity with powdered resin; heat the screw sufficiently to meet the resin as it is driven in.