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FREQUENTLY ASKED QUESTIONS

1. Are the tubes laser cut?
2. Do you sell your profiling machine?
3. What materials can you work with?
4. What welding process do you recommend for 4130 tubing?
5. What information do you require for a proposal?
6. Can you cut the tubing for a race car chassis from AutoCAD or Solidworks drawings that I supply?
7. When several tubes join in at one point, what is the order of cutting that you apply?

1. Are the tubes laser cut?

No, the tubes are cut using a CNC machining process. Our process is simpler, cleaner and more economical than laser processing.
  • Cleanest cut surface - our profiling is a cold cutting process which eliminates heat affected material particularly on thin wall, small diameter tubes in 4130 materials
  • More economical -Typical tube kits consist of 15 to 200 different tubes per kit, in multiple tube sizes. Laser processors cater to higher volume production and cannot economically set up and produce one-off tube kits
  • Our process is simple to set up for multiple tube sizes to produce single pieces or multiple sets

2. Do you sell your profiling machine?

Not at this time. We have designed a complete proprietary system around the CNC profiler and support every aspect of the design and manufacturing process for tube kits. Operating the machine is actually the simplest step in this process. We are continually improving material handling features, programming methods, documentation and adding features. Licensing of our process is a possibility.

3. Which materials can you work with?

Any machine-able material can be profiled with our process. The most common materials are 4130N, stainless steel, aluminum and carbon steel. 4130 chrome moly is the preferred material and most popular for high-strength, lightweight structures. It is also most readily available in a wide range of tube diameters and wall thicknesses.

4. Which welding process do you recommend for 4130 tubing?

The accurate nesting and snug fits of the tubes at each joint and cluster are ideal for the TIG / GTAW process. This offers the most control of heat input, allows smaller welds without compromising strength and produces the cleanest welds. The results are minimal shrinkage, lower residual stresses and a higher quality product.
Having said this, the accuracy of Cartesian Tube Profiling kits will make any preferred process easier, cleaner and stronger.

5. What information do you require to prepare a proposal?

Pricing is based on the number of tubes, tube sizes, the quality of information being provided and the kit quantity required. You can minimize the time and cost required with an itemized material listing, an assembly drawing of some form and an understanding of the quality of information being provided is required. An excel spreadsheet with the following information for each tube is preferred.
  • Tube number, tube od, tube wall thickness, aprox. length (+/-2”), special features such as bends
  • Total number of pieces per weldment
  • Quantity of kits.

6. Can you cut the tubing for a race car chassis from AutoCAD or Solidworks drawings?

Yes, we can produce tube kits from most forms of drawings and material lists.
We can work with your 3D solid model or we can create the 3D solid model from sketches, drawings, dimensions and a material list that you provide.
Send us a sample of the information you have and we will let you know if more information is required.

7. When several tubes join in at one point, what is the order of cutting that you apply?

The goals are weld strength and ease of assembly. We select the tube trims to represent a logical order in which to build the structure. We create the trim sequence in the same order one would use to build the 3D structure on the shop floor. Typically, the primary load carrying members are trimmed first, followed by horizontal and vertical spacer tubes and then followed by diagonal or brace tubes. This is usually either fairly self-evident or in many cases, the order is not crucial.

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