Cutting Paper Advice?

My school just bought our laser cutter over the summer and I have some questions about cutting paper. So far I have learned;

  1. Paper need to be held still so it doesn’t move while cutting.
  2. We should buy a Seklema mat to hold the paper. It will be a while before we can order one. What else can we do or use?
  3. Use engrave instead of cut so it won’t just burn holes. (But cutting works as well…)
  4. Paper burns so watch the GF while it is printing. (Watch every time you are printing)
  5. We need to use a caliper to figure out the papers width. Done, It is 0.009. (I originally wrote 0.09 which was incorrect.)

What else do we need to know?
I am not sure what to do about Precision Power or Speed…
Thank you for any advice/help.

This should give you a lot of insight:

https://community.glowforge.com/search?q=paper

and ALWAYS watch the GF, not just with paper.

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Use tabs to keep your pieces together so that you aren’t cutting out holes. When the job is done, you’d punch them out of the surrounding paper.

There are lots of ways to do this, but I’d start by getting really familiar with path booleans.

You can make your own with a sheet of very flat scrap plywood or MDF sprayed with a light coat or two of Krylon #7020 Repositionable Adhesive spray. Read the instructions on the can, and once you have it completely dry, press a clean T-shirt down on it and remove it a couple of times to take the tack down. (When it’s fresh, it won’t let go of the paper without tearing it.)

It’s not as easy to use as the Seklema mat, but it can be made to work. It is going to get a little cut up by the laser, so try to keep the settings on the low side to start with.

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Take a piece of plywood and spray it with repositionable adhesive. Under heavy use a Seklema mat may be cheaper in the long run, IDK, but I know how budgets work and the plywood sprayed with a tacky spray will be better in a spreadsheet.

While they are still very useful, they are not as necessary as they once were. Click on the gear icon and use the Set Focus feature.

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As this is being used in a school environment, while you must watch the laser teach the kids not to stare at the bright white flame where laser meets material. It probably won’t do any permanent damage, but after oohing and aahing a couple times don’t stare at that part.

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Can you explain what you mean by tabs? Do you mean like what letter stencils have for say the inside of the O? The inside is attached with lines so it is not an empty circle?

Essentially, yes, but much smaller, so they are easily punched out. I’ll mock up a quick example, one sec.

Of course when you are using a mat or the plywood with the paper, your thickness is the thickness of both together. The set focus will make that a lot easier.

There are lots of ways to do this, this is just one very simple example.

You have a “donut” shape you want to cut out, a circle in a circle. On the left, I make a very narrow rectangular path (0.01" ought to do it, but you may be able to go even thinner)

Overlay them.

Path->difference, now you have two “halves” of the original donut.

Now we want to remove the vertical line segments. Start by selecting the nodes surrounding your vertical segments, and then click the “delete segment between two non-endpoint nodes” button (highlighted blue upper left-ish)

End result:

End result closeup:

Repeat for the horizontal direction if you want more stability:

Now when you cut it, it’s ready to punch out of the surrounding paper.

You can use this method lots of ways, but putting custom breaks in the path is what it all boils down to. You’ll want to get dead solid on your path manipulating techniques, editing nodes and path booleans are core skills to working with precise stuff on the glowforge.

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You know what, I should have done cut path, it’s a lot simpler. Ignore difference, use cut path and just delete the resulting tiny segments. Like I said, there are many ways to do this.

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Wow thanks!

I wouldn’t rule out vector cutting paper. It can work very well, depending on stock, settings and, what you are trying to do. It’s much faster than engraving in most cases.

Most of the pop up cards I am making on my Glowforge lately are vector cut.

Some of these have changed slightly over time. My advice.

  1. Use engrave instead of cut so it won’t just burn holes.
    If you’re just cutting big shapes, you don’t want to do this. This is helpful if you’re cutting out intricate designs with a lot of small bits. I still don’t use it because I use a Seklema mat and have had no issues.

  2. We need to use a caliper to figure out the papers width. Done, It is 0.09.
    Use set focus and don’t worry about this.

There’s good advice for everything else already. I don’t love tabs, but it depends what you’re making. Tabs impact the clean edges on the paper and you can’t just sand it away like you can with wood. But if this doesn’t matter to you, it’s one way to prevent tiny fly-away bits.

I mask my paper with a medium masking tape (Called vinyl transfer tape, but it’s not vinyl). Once again, this matters only if you care about the surface of the material.

The settings will depend on the weight of the paper. You can search the forum for those and then experiment a bit!

Good luck and have fun.

0.09 what? You always need to specify a unit…

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In inches it would be veneer thicknesses or 2,3 mm while in millimeters it would be writing paper. Other units are improbable. context should provide the rest.

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I’d also believe 0,009”, so it might be measured in typos.

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The measurement is 0.009. I double checked and wrote it wrong.
Thank you.

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I suspected because I do the same thing pretty regularly. Easy to miss a zero when you type it.

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Scientific notation FTW… 9e-3

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