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Types of Shoe Lasts. According to your Material.
Previously we talked about the lasts and their importance for the construction of footwear (shoe lasts and its importance within the Footwear Industry). The lasts can be classified according to:
· The design of the shoe. They adapt according to the model to be produced: sandals, sports shoes, boots, etc.
· The orientation of its longitudinal axis. Straight lasts, separators, approximations, etc.
· Their internal capacity. They are required when internal templates must be included.
· Its material. Wood, plastic or aluminum.
Today we will study the Types of Lasts according to your Material.
Wood Lasts.
They are widely used in general for the production of footwear, for their elasticity and operation.
·Advantages.
· They adapt very well to almost any model.
· Allows the use of nails.
· They are best for handmade models.
· They absorb moisture from footwear as it is built.
·Disadvantages.
· They’re the most expensive on the market.
· They are fragile and can deteriorate if moistened.
· Not indicated for mass production.
· They cannot be used in heat tunnels or in vulcanization furnaces.
"The selection of a material for the lasts is based on the production system you use"
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Plastic Lasts.
They hide a myriad of advantages so many are inclined to this option, since it can be handled very easily at the time of shaping.
·Advantages.
·They are very easy to repair.
·They are used for modern technology.
·Widely used in the production of high quality footwear.
·Used in mass production.
·They reject heat and moisture.
·Disadvantages.
·They are expensive.
·They may suffer damage such as cracks, dents, or scratches.
·They cannot be used in vulcanization processes.
·
They are heavy for large sizes, becoming difficult to handle.
Hormas de Aluminio.
Despite being very economical, its accuracy is not accurate, so it is not the favorite of many.
·Advantages.
·Are economic.
·They can be used in mass production.
·They are durable and unharmed.
·Light weight.
·They are used for vulcanizing processes.
·They repel moisture and heat.
·Disadvantages.
· They’re not too precise.
·They can cause damage to the lining of the footwear by its rough surface.
·There may be quality variation between sizes.
·They’re hard to clean.
The choice of a type of last will depend on the type of footwear to be produced, the construction system used and your budget. What type of last do you prefer, wood, plastic or aluminum?
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