GDM Interiors with its 40 years of experience in the fit out and joinery industry who are also recognized as one of the best joinery companies in Dubai has listed down the below seven mistakes that should be avoided by anyone who handles wood joinery.
1. Insecure operations on machinery
2. Overflowing glue
3. Usage of nails
4. Joinery with gaps
5. Dust exposed painting room
6. Paint wastage through over spray
7. Defective process
Insecure operations on machinery:
Working on a spindle molder is quiet difficult that no employees will be allowed to work on the machine without wearing proper safety precautions. Kickback conditions can result in accidents leading to injuries to the operator.
The entire risk can be avoided by using
1. Pressure fins/springs
2. Using magnetic and sliding type fixtures
3. Clamping the wood work firmly
Its common that employees apply too much of glue with an intention to make sure that no area is left without glue. This pushes the excess glue out of the joinery while clamping the glued parts. The excess glue will leave traces on the wood work, however cleaned and polished. This result in wastage of 30 to 40 percent of glue also as a result leaves dirty glue traces on wood furniture.
The risk can be avoided by knowing the actual amount of glue and clamping pressure required for the type of wood being used for a particular joinery.
Usage of nails:
Usage of metal nails while joining wooden parts and assembly has been a common practice in the past. In these modern days furniture with no nails on them are preferred due to the perfect finished look the furniture attain. There are many case studies that say solid wood furniture can be manufactured with superior quality even with no use of nails on it.
Joinery with gap:
The quality of joints and joinery determines the quality of furniture. It’s obvious that furniture without gaps at joints and with stunning finish looks beautiful. A gap at a joint may be caused due to various reasons like wrong measurement, thick glue line and carelessness. This in turn directly affects the price and profits. With attention to minimal details, discipline and by following definite rules while making a joinery one can avoid the gaps in joints resulting in the manufacture of high quality furniture.
Dusty condition in painting room:
A negative pressure inside a painting room pulls in more dirt and dust from outside leaving the room in an unfavorable condition for painting. When an exhaust fan of a room in turned on during the painting process it creates negative air pressure in the room. This is when the room will try to suck in more air including dust and dirt from the outside.
An Air Makeup unit will counter this negative pressure by replacing the air being exhausted from the room. It is an intelligent choice to select an AMU designed to force more air into a room than is exhausted, thereby creating positive pressure inside the room. In this scenario, the booth has more air than outside the booth and now when the door is opened all dust and dirt is pushed away from the booth making it dust free.
Paint wastage through over spray:
Normally Painting is done with spray guns with high-pressure air to do the painting at faster speed. It is observed that the HVLP guns are also used with a very high-pressure air. This causes a lot of over spray. It is observed that almost 55% of the paint is lost in over spray. Paint material being very expensive it is a very high wastage causing higher manufacturing costs. This also causes less deposition of the finishing material on the furniture causing poor finish.
This can be avoided by use of proper HVLP/LVLP spray systems with appropriate pressure. There are systems, which assure 95% material transfer. This saves lot of money, time and material.
Painting on joinery is normally done with spray guns for faster speed in the process. It is studied that when HLVP guns are used with a very high air pressure, 55 percent of paint is lost in over spray. This high wastage increases the manufacturing cost and at most of the times causes less deposition of the finishing material leading to poor finish.
Use of a proper HVLP/LVLP spray system with appropriate pressure will solve the issues. There are spray systems that assure 95 percent of material transfer which in turn saves lot of money time and material.
Machine operators are more concerned in quick completion when it comes to operation like routing, molding and sawing. Here the quality and finish of process is not taken care due to their operating speed. This in turn needs rectification at the last stages of completion.
If proper care is taken to ensure that each operation is done with utmost care and a defect free part is delivered for the successive operation a bigger boost in the quality and quantity of production is attained. A simple tip is, proper holding of work piece and sharp tools will assure a good finish.