Home decoration has been admitted, but found profiteers to install the security door is not soundproof, want to change the security door, but the old anti-theft door on the expansion of the screw how to remove is a big problem, listen to the door that must be removed next to the security door Wooden door sets, in order to remove the security door, that the amount of work on the big. Also read the online on the expansion will be smashed to the wall, and then pull out the outer ring metal approach, but are not very good. So I recently wrestled with a way, if you use a larger than the expansion of the long hair of the long hair of the body, the expansion of the screw in the middle, directly to the concrete wall to play a role, is not Can easily pull out the expansion screw. Because do not understand the specific principles of expansion, I hope to understand the user under the reply, or who now with me the same confusion, with my practice under the method, the results tell the next, thank you! More
Can be smashed into the whole, the door when the installation hole to be another drill, so no need to pull out
First with a professional tool to expand out of the expansion, after taking the hammer, hammer a hammer can be demolished.
A method for your reference. I did not try on the security door, but in other occasions used effectively. 1, exit the nut washer, etc., may be difficult but must exit. Rinse the screw in the inside, make it loose and return to the wall as much as possible. 2, with a flashlight to help, observe and find the expansion of the bolt jacket and anti-theft door between the hole, the widest place. If you can insert the head of the needle nose pliers at the widest point and reach the wall, continue with the following steps. Otherwise skip to step 6. 3, with the appropriate small drill, in the widest point by the wall side of the hole, about 3 ~ 4mm deep can, the hole is also close to the bolt jacket. 4, with a pointed nose pliers from the hole into the clamping bolt jacket (while the tip to be inserted into the screw and jacket), also into the also, slightly rotating, and slowly remove the jacket. 5, the above need a thin and long needle nose pliers, short rough not work. -------------------------------------------------- -6, with a diameter of about 4 ~ 6mm of the drill, in the anti-theft door frame edge along the expansion of a hole, the hole and the door through the hole (of course, the operation of some difficulty.Multiple hair of the crown, Prevent), appropriate into the wall 3 ~ 4mm. 7, turn to step 4.
