Tag Archives: batch nesting

10 Ways to Cut Sheet Metal Waste

10 Ways to Cut Material Waste with Nesting Software

10 Ways to Cut Material Waste with Nesting Software

Nothing cuts into cash flow or is a profit drain like wasted raw material.  And nothing is more frustrating than seeing huge piles of scrap go out the door.  It is these real, tangible costs that, with some foresight and creative thinking, can be turned into rewards.

Here are a few tips to start you down the road toward material savings.

1. KNOW YOUR MATERIAL USE RATE

It is surprising in this age of technology how many manufacturers don’t know their material use rate. They cannot easily answer the question, “How much of each sheet of material is used for parts?” or “What percentage of your raw material is scrap?” In some cases they need to grab a pencil and paper and do some quick estimates.  And that’s fine if that’s where you are.  At least it is a start. The best place to start when reigning in your material waste is getting a handle on what kind of scrap rate you currently have. When calculating, be sure to look at a large enough production sample to extrapolate use over six months or a year to get a truer picture of reality.  Remember you can’t change what you can’t measure…at least when it comes to material waste. Read more …

Evaluating the Sheet Metal Nesting Process | Part 4 of 4

How to Evaluate the Nesting Process

Steps to Evaluate the Nesting Process

This post concludes our series on evaluating the nesting process.  We’ve established a foundation for a process review, reviewed the CAD to CAM process, and looked at the order entry side of the equation.  Now we’ll turn to the heart of the nesting process, the actual creation of nests and output of tool paths to the equipment.  This is often the make-or-break element in the process that determines efficiency (material and time), throughput and the overall effectiveness of the sheet metal fabrication process.

Again, we’ll follow our method of first describing the status quo, evaluating it critically, then looking for alternatives.

Creation of the nest and tool path Read more …

4 Nesting Strategies to Manage Cut Part Production

Optimation Nested Parts

Optimation Nested Parts

A nesting strategy – to be distinguished from nesting software – that is suitable for a job shop may not work for an OEM.  A made-to-order shop may need different nesting strategies than a shop that uses Kanban.  A nesting strategy perfect for a small shop, may be ill-suited for a multi-facility corporation.  Why?  Because each company has different resources and different production objectives, both factor into the choice of a nesting strategy.

Often, the manufacturing engineering team is challenged to determine which strategy – or strategies – is best suited to achieve their production goals.  When choosing a nesting strategy they must consider productivity, material efficiency, order cohesion, and most of all, the labor resources available.

Similarly, the team is challenged by resource constraints.  There are only so many programmers, a limited number of hours in the day, a material budget, storage space allocations, machine speed, etc.

Making the most of the resources to achieve the right goals through nesting with CNC nesting software is a nesting strategy.

What’s the best strategy to use?  Let’s look at several choices…

Read more …