Wall Thickness | Standard Wall Thickness With Full Determining Process


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When it comes to 3D printing, wall thickness is one of the most crucial factors to consider. If the wall thickness is not correct (too thin or too thick), problems with the 3D construction and quality arise. The walls not only highlight the inside of the building from the outside. They also support the roof and maintain a comfortable temperature, so they need to be strong. 

Generally, the wall thickness of a piece can range from 0.5 mm to 4mm, but in specific cases such as smaller or bigger pieces happen too. The important thing is that the design guideline suggests keeping it thin and uniform for an extraordinary quality product!

What is Wall Thickness?

Wall thickness is the distance between the outside of the 3D model and its restricting surface. The wall thickness of a printable 3D model depends on many factors. These factors can include the materials used, the sizes, and the overall design of the 3D part. Here are some basic guidelines and things to keep in mind when choosing wall thicknesses. With strong materials such as stainless steel and titanium, the minimum wall thickness can be up to 0.3 mm or 0.4 mm.

The wall thickness depends on three things:

  • Whether external or internal wall: internal walls generally do not bear the weight of the roof and can therefore be thinner; Interior walls also play a lesser role in insulating a building from heat and cold;
  • What the wall is made of: walls made of thicker materials can be thinner than walls made of weaker materials;
  • Climate: Desert climates need thicker walls, while tropical climates need thinner walls.

Read More: How To Build A Concrete Block Retaining Wall

How to Determine the Wall Thickness

It is critical to select the nominal wall thickness with care. This is because, in addition to structural performance, wall thickness determines:

  • Mold filling: If the wall thickness does not match the flow behavior of the thermoplastic material, it can be difficult to fill the mold. Bosses should follow molding design guideline rules of properly designed walls of 40-60 percent of the surrounding area to avoid sinks.
  • Part Weight: The thicker the wall, the heavier the part.
  • Cool downtime: the thicker the wall, the longer it takes for the part to cool after molding.
  • Part costs: both increase part volume and longer injection molding cycle times, sometimes leading to higher costs.
  • Dimensional stability: Different areas of the part with different cooling rates, which normally occur with high or uneven wall thicknesses, lead to residual mold stresses, which lead to the part deforming after demolding.
  • Part performance: Thick sections can create gaps in wall thickness.
  • Aesthetic side: if the wall is too thick (location), uneven cooling rates can lead to sinking traces.

Improving Part Design with Uniform Wall Thickness

Take a look at a molded toothbrush holder, plastic gas box, or cutlery tray in your kitchen cabinet. Do you notice that the walls of these household items are uniform? However, if the pipe is of uniform grade, size, and thickness and there are more than 10 lengths, only 10 percent of the individual lengths, but not less than 10 lengths, need to be measured. 

This is one of the fundamental rules of plastic injection molding, and it can result in water immersion, deformation, and the production of erroneous or non-functional parts. However, designers of consumer goods, medical products, aerospace products, and industrial items frequently pay little attention to material flow. 

The plastic filling qualities, which are at least partially responsible for product functionality and parts like box lids with tall thin walls, can be reinforced with gussets, so long as the relative wall thickness of the supporting material follows the 40 to 60 percent rules mentioned previously. The right wall thickness reduces the risk of cosmetic defects on plastic parts.

  • Walls in any plastic: Molded parts should be no less than 40 to 60 percent of adjacent walls, and all should fit within recommended thickness ranges for the selected material. 
  • Part geometries such as unacceptably long sections, sharp inside corners, and poorly designed heads (not the person in the corner office signing the salary) should be avoided regardless of wall thickness.
  • If necessary, use ribs to reinforce high walls.
  • Sharp outside corners are fine, but by placing the beam in the inside corners, the product design allows them more robust and reduces the stress that a tilt creates.
  • Grommets must conform to cast design rules for properly designed walls in 40-60 percent of the area to prevent sinking.
  • Finally, follow draft guidelines – a good rule of thumb is 1-degree draft to 1-inch cavity depth – and maintain a constant draft throughout the workpiece to avoid internal stresses that create warpage and flexure waves.

Choose Materials with Wall Thicknesses in Mind

One of the most important factors when choosing a wall thickness is the choice of material for your project. With literally hundreds of materials to choose from, choosing the right material can be a challenge. You can search online for available resins grouped by families with recommended wall thickness ranges, as well as detailed information on material properties, tensile strength and toughness, and maximum operating temperatures.

First, look for the key attributes for the finished product:

  • Is chemical or ultraviolet (UV) resistance required?
  • Will the plastic be exposed to direct fire or extreme temperatures?
  • How strong should the part be, and should it bend under load?
  • If color is important, can the plastic be stained or resin stained before spraying?
  • What about the opacity? Some plastics have good optical properties; others do not.
  • Is the product being used in an electromagnetic environment?

While all of these factors are being evaluated, return to the wall thickness section on the website. Of course, materials are only good candidates if they can be shaped into the dimensions and geometries required for your project and, at the same time, meet the technical requirements. When you are close to choosing a material, give one of our customer service engineers a call. They can advise you directly or put them in contact with an expert from one of our material suppliers.

For example;

6/6 nylon has good flow properties, is good for thin-walled parts, and has excellent impact resistance, but you may have abandoned it due to its modest strength and lack of heat resistance. In some cases, you can be directed to a completely different family of materials:

  • Polycarbonate is a common material used in optical design, but acrylic is often the best choice for thicker parts as it is less likely to have nicks, voids, bubbles, and poor details.
  • Optical grade liquid silicone rubber (LSR) offers superior light transmission and product transparency and enables designers to break the rules of gross and fine even with very small details.
  • A styrene-like material known as K-resin is often a good substitute for ABS or polycarbonate in large structural components.
  • Liquid Crystal Polymer (LCP) is another durable, glass-filled material that can be “shrunk” if necessary.

Again, hundreds of materials and thousands of ways to tweak, customize, or tweak them to get the results you want.

Wall Thickness: FAQs 

How thick are the standard walls?

4.4 wall thickness. The minimum thickness of the external walls of the one-story houses must be 254 mm. The walls must be laterally supported at intervals of no more than 7315 mm. The minimum thickness of the inner retaining walls must be 203 mm.

How thick is a typical interior wall?

The typical interior walls are framed in 2×4. This makes the walls roughly 4-1 / 2 “thick (3-1 / 2” wood on either side with 1/2 “drywall). Mean failure rate was 38% (95% CI, 24-54) at 2nd ICS-MCL, 31% (95% CI, 10-64) at MAL, and 13% (95% CI, 8-22) at AAL (P=.01).

What is the minimum wall thickness?

The bottom floor of 3 must have a minimum thickness of 140mm (7N / mm2) for blocks or 215mm for masonry. A two-story house with an internal retaining wall depth of more than 1 meter should be 140 mm for blocks (7 / Nmm2) or 215 mm for masonry. Mean CWT was 42.79 mm (95% CI, 38.78-46.81) at 2nd ICS-MCL, 39.85 mm (95% CI, 28.70-51.00) at MAL, and 34.33 mm (95% CI, 28.20-40.47) at AAL (P=.08).

How thick is the outer wall?

The outer walls are usually 10 to 30 centimeters wide. Homes built with flat terrain or heavy exterior masonry has thicker walls. There are no limits to the thickness of the outer wall.

How thick is the sanitary wall?

For a normal plumbing wall, it should be about 6 inches wide. For cast iron, the gutter should be 4 5/8 inches in diameter. If your plumbing system uses plastic tubing, a 4-inch wall is sufficient. In addition, evidence from observational studies suggests that the 4th/5th ICS-AAL has the lowest predicted failure rate of needle decompression in multiple populations.

Should the outer walls be 2×4 or 2×6?

It is believed that pins larger than 2×6 will conduct less heat out of the 2×4 elements because they are smaller and thicker walls from front to back. Mean (95% CI) for fourth and… Figure 4 Needle Thoracostomy Failure Rates by Anatomic Location is logical and sensible but not as important as the wall and window insulation factor.

Are there horizontal studs on the walls?

These horizontal studs are probably just controlled strips attached to the vertical pins behind them to make the wall flat. You can find a hole in the top wall and look inside through the rearview mirror.

How do you make the walls thicker?

When it comes to standard building materials, stone walls are generally thickest, and the recommended maximum thickness for walls up to 70 feet is 12 inches. Mean (95% CI) for fourth and fifth intercostal spaces–anterior axillary line (ICS4/5-AAL), the fourth and fifth intercostal spaces–midaxillary line (ICS4/5-MAL), and the second intercostal space–midclavicular line (ICS2-MCL). Then, add another 4 inches for each additional 21 feet of height. Beyond that, regardless of the material, thicknesses are too high.

How thin can the inner walls be?

A typical wall unit comprises tile, two ceiling tiles, wall studs, and 1/2 “drywall to form a 4 1/2” thick wall. The narrow wall is 2 to 2 1/2 inches thick, but it is not suitable as a load-bearing wall, and local building codes may not allow it between rooms.

Learn More: How To Remove Wall Tiles Without Damaging Plasterboard

How thick is the masonry?

The minimum thickness of load-bearing stone walls on more than one floor must be 203 mm; if the height from floor to floor does not exceed 12 ft. (3658 mm), the payload must not exceed 60 lb/ft. (0.156 kg/ft). ). M2) and the roof are designed so that there is no static load on the side.

Wall thickness for load-bearing structure. For all types of buildings, for load-bearing structure, in a brick masonry wall. The thickness can be 300 mm to 450mm for the outer wall of the G+2 house. And internal wall thickness can be 300mm to 200mm according to span and room size.

Learn More: How To Install A Lintel In An Existing Brick Wall


You don’t have to worry about the wall thickness as it is determined by the frame width. It is standard. Therefore, you can use 2 to 4 or 2 to 6 pegs (although you can only use them in special circumstances. Such as when the wall can hold extra weight or you need extra insulation).

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