Archive › December, 2020

Low Vacuum got your parts moving around?

Vacuum loss while machining is a real problem. Vacuum drops with each pierce and cut. Since the coefficient of friction is based on the area of the part, smaller parts are the most affected. Unfortunately, the lateral force applied only varies by material and feed so what was ok for large parts may not work at all for small parts.

Step one is to ensure that there are no machine vacuum leaks and than the spoilboard edges are seals etc. Here are several strategies that will help with the movement problem. Two of these strategies try to conserver vacuum for when it needed most and the third reduced the force feed.

Option 1: Conserve vacuum by not cutting through the material.

Leave an ‘onion skin’ to reduce the amount of air passing through the spoilboard. Parts hold more firmly. Two passed are required to fully cut the parts. The … Read the rest

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