See Weizhi -handboard model making as thin as a copper nut

Product design development and production requires making handboards or models, checking the appearance structure of the product, and whether the assembly is reasonable. The inlay of the copper nut will directly affect the product assembly.

Three major factors affecting the copper nut:

1. Reserve size for drawing pores; 2. Copper thread inlaid process; 3; Experienced handicraft master.

Many products need to be inlaid with copper nuts for assembly test. Due to 3D printing materials/small batch materials and

The physical properties of injection molding ABS materials will be different.


The inner diameter is 1.4mm, the outer diameter is 2.5mm, and the height is 3mm


The inner diameter is 1.6mm, the outer diameter is 2.5mm, and the height is 4mm


The inner diameter is 2mm, the outer diameter is 3.5mm, and the height is 3 ~ 6mm


The inner diameter is 2mm, the outer diameter is 3.8mm, and the height is 3 ~ 5mm


Inner diameter 3mm, outer diameter 5mm, height 4/5/6/8/10/12mm


Inner diameter 4mm, outer diameter 6mm, height 5/6/8/10/12mm


5mm inner diameter, 7mm outer diameter, height 6/8/10mm


Inner diameter 6mm, outer diameter 8mm, height 6/8/10mm


Inner diameter 8mm, outer diameter 10mm, height 8/10mm

(This copper nut specification is conventional size, and the special nut specifications have not been listed)

▲ The larger the size specifications of the nut, the larger the thickness of the aperture wall, and the thickness of the wall is generally 1.5 ~ 2mm.

1. What impact of the pores or too small on the product?

Figure (1) Show: There is no problem in the selection of plastics and nuts, and the standard state is buried in plastic;

Figure (2) Show: The size of the nut is too small, the plastic reserved hole

If the diameter is too large, the nut can not be eaten after the nut was buried in plastic, which will produce insufficient twisting force.

Figure (3) shows: The nuts of the nut are too large, and the plastic reserved pores are too small, which will produce glue or burst.

▲ If there is no problem with the size of the nut and the size of the plastic, and there are abnormal phenomena, then we will usually consider to improve through some optimized design;

1. Plastic reserved pores are too large, use model glue reinforcement and model powder supplement;

2. The plastic reserved aperture is too small. Use electric drills to be processed to a relative pore diameter or manual intervention and then inlay;

2. What are the inlaid processes of copper nuts?

(1) Hot -melt nut: generally use hot -melt machines for hot pressure inlaid;

Make the material heat and melt, and the material will be wrapped in copper nut after cooling.

(2) Injection nut: Injection nuts are strictly strictly required for the aperture, and the pore diameter needs to be controlled within 0.05mm;

In small batches of production technology, when the silicone mold is made, the copper nut hole is reserved. When making the product, the copper nut and the material are poured into the mold together to make it embedded.

Experimental test:

ABS plastic copper nut inlaid:

3D printing resin copper nut inlaid:

3D Bronze Copper Nail inlaid:

Small batch ABS copper nut inlaid:

get conclusion:

ABS Plastic-Copper Nail inlaid:

Package: ⭐⭐⭐⭐⭐

CNC production is the best in setting copper nuts with injection ABS materials. After hot -melt materials in ABS materials, the material is melted. After cooling, it can be perfectly combined with the copper nut, which is quite solid.

3D printing resin-copper nut inlaid:

Package: ⭐⭐

The 3D printing material inlaid copper nut testing performance is general. After the material is hot -melt, it is powder -like, which failed to perfectly fit the material with the copper snail mother. The test performance is as follows. The copper nut has not been used multiple times. There will be slide, burst, and can be added with glue. Application scope handboard model, assembly test.

3D Battle of India-Copper Step inlaid:

In 3D printing materials, nylon inlaid copper nuts are the best. After the nylon material is hot -melt, the material is melted. After cooling, it can be perfectly combined with the copper nut, which is quite solid.

Small batch ABS material-copper nut inlaid:

Packality: ⭐⭐⭐/⭐⭐⭐

Small batch materials need to make molds because the process needs to be made, so small batch of products can be inlaid with copper nuts or buried copper nuts in the mold. The copper nut test is medium -sized. Quick test -level handboard model production. The buried copper nut is relatively firm. It can be used repeatedly after being embedded and produced as a use -level product.

Package: ⭐⭐⭐⭐⭐

Product Recommendation: 7mm hot melt glue gun