Last updated on February 9th, 2024 at 01:13 pm
Did you know that the design for your formed precision sheet metal part might not be manufacturable at many metal fabrication shops?
Most shops rely on standard press brake tooling to efficiently fabricate formed sheet metal parts, and they may no-quote parts that they can’t easily manufacture.
But at Approved Sheet Metal, we’re committed to getting you the sheet metal parts you need, and our forming experts can take your part design from “no-quote” to “no problem.”
Table of Contents
- 1 Standard Press Brake Tooling Examples
- 2 Examples of Non-Manufacturable Formed Parts
- 3 3 Options for Projects Requiring Non-Standard Press Brake Tooling
- 4 Example of an Updated Design for a Formed Part
- 5 Recommended Default Sheet Metal Tolerances
- 6 Standard Press Brake Tooling FAQ
- 6.0.1 Why might the design for my precision sheet metal part not be manufacturable at many metal fabrication shops?
- 6.0.2 What kind of standard press brake tooling is available for forming sheet metal parts?
- 6.0.3 What options are available for projects that require non-standard press brake tooling?
- 6.0.4 Can Approved Sheet Metal help me update my design to make it manufacturable with standard tooling?
- 6.0.5 How can I get assistance from Approved Sheet Metal for my precision sheet metal parts?
Standard Press Brake Tooling Examples
The standard press brake tooling we have is consistent with what you’d find at any sheet metal shop:
- 90-degree bending for 27-10 gauge
- 90-degree bending with thin tip punch
- 90-degree bending with narrow punch
- 90-degree bending with thin tip gooseneck punch
- 90-degree bending with gooseneck punch
- 90-degree bending (sash)
We can also use custom offset tooling for when the offset height and angle are equally important for the part. (If the offset height is more important than the angle, then we’ll likely create a “lazy offset” instead.) For parts requiring hemming, we have hem tooling.
We can form large radii in one hit or rely on bump-forming, as shown here.
Finally, we have gusset tooling for adding gussets to bent sheet metal parts.
Examples of Non-Manufacturable Formed Parts
Sometimes we receive designs for parts that we can’t form using standard tools, posing challenges that can cost customers time and money. For example, when we see a part design with rounded radii, we know that our in-house tooling won’t get the job done.
Deep boxes can also be impossible to form using conventional tooling. In this example, the sides are too high and the distance between the sides is too narrow, which would cause the part to crash into the press brake.
3 Options for Projects Requiring Non-Standard Press Brake Tooling
So, what happens when we get an RFQ for a part that we can’t make with standard press brake tooling? We find a solution to avoid the dreaded no-quote. Here are three pathways forward at ASM:
Custom tooling
While custom tooling is an option, we consider it almost as bad as no-quoting. Why? Custom tooling adds considerable cost and time to a project, which is hard to justify for prototypes or low-volume parts. Our team will always try to find alternative solutions before suggesting custom tooling. But if you decide that’s the right path, we’ll support your plan and work with you to get the proper tooling for your project.
Cut and weld
We’re experts at cutting and welding sheet metal parts and offer various in-house welding capabilities, including MIG, TIG, and spot welding. When a sheet metal part is too big for our standard equipment and tooling, we can separate it and weld the pieces together into a final part.
Update the design
The most efficient solution is often to update the design so the part can be made using standard tooling. You may need to sacrifice certain aesthetic preferences, such as rounded features. But if you have some degree of flexibility in your design, minor changes can save you time and money.
Example of an Updated Design for a Formed Part
We love to help our customers improve their designs and are always happy to collaborate with you.
For example, this project posed a small challenge: the part walls exceeded our equipment depth capacity, which would cause the part to crash into the press brake during the bending process. We came up with two alternative options.
Whether you go the route of custom tooling, cutting and welding, or working with us to update your design, our team is always standing by to help you get your sheet metal parts fast. Our goal is to maintain your design intent while efficiently moving your part through our shop.
Let us show you what our team of sheet metal fabrication experts can do for you. Request a quote for your precision sheet metal parts today.
Recommended Default Sheet Metal Tolerances
| DIM | Tolerance (MM) | Tolerance (Inches) | Description |
| A | ± 0.13 | ± 0.005 | Sheared Edge to Hole |
| B | ± 0.13 | ± 0.005 | 2 Holes on One Surface |
| C | ± 0.25 | ± 0.010 | Formed Edge to Hole |
| D* | ± 0.76 | ± 0.030 | Holes Across 2 Bends |
| E* | ± 0.76 | ± 0.030 | Holes Across 4 Bends |
| F | ± 0.25 | ± 0.010 | Sheared Edge to Bend |
| G | ± 0.38 | ± 0.015 | Across 2 Bends |
| H* | ± 0.76 | ± 0.030 | Formed Part |
Noted dimensions are to be taken while the part is in a restrained condition. Noted dimensions are for parts within a 12” envelope.
* Dimensions D, E and H are not recommended forms of dimensioning
These tolerances are recommended and best practices. We can obtain tighter tolerances (depending on part geometry/ construction), contact us for more information
Standard Press Brake Tooling FAQ
Most metal fabrication shops rely on standard press brake tooling to fabricate formed sheet metal parts efficiently. If your design requires non-standard tooling, shops may not be able to manufacture it and may decline to quote the part.
The standard press brake tooling available at Approved Sheet Metal includes options such as 90-degree bending for different gauge ranges, thin tip punches, narrow punches, gooseneck punches, and sash bending. Custom offset tooling and hem tooling are also available for specific requirements.
When faced with a project that cannot be made using standard press brake tooling, there are three pathways forward at Approved Sheet Metal:
- Custom tooling, although it adds cost and time to the project and is typically suggested as a last resort.
- Cut and weld, where the sheet metal parts are cut and welded together using various techniques like MIG, TIG, or spot welding.
- Updating the design to make it compatible with standard tooling, which is often the most efficient solution and can save time and money.
Yes, Approved Sheet Metal is happy to collaborate with customers to improve their designs. They have experience in updating designs to make them compatible with standard tooling, even if it requires sacrificing certain aesthetic preferences. Minor changes in the design can save time and money in the fabrication process.
You can request a quote from Approved Sheet Metal for your precision sheet metal parts. Their team of sheet metal fabrication experts is always available to help you. Whether you need custom tooling, cutting and welding, or assistance in updating your design, their goal is to efficiently move your part through the shop while maintaining your design intent.
