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What tool should I use to cut a 1'' circle hole into a woven synthetic grass? Answered

 

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Jayefuu (author)2010-01-23

How thick is it? Do you mean like astroturf material used for all-weather pitches? If it's thin enough to fold, do as andy suggests. If it's all-weather pitch material, perhaps try a stiff craft knife like a Stanley knife and just go careful and slow.

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SpliceNDice (author)Jayefuu2010-01-23
Yes, like astroturf.  It's 3/4'' thick.

I was wondering if there was a way to efficiently do 1,000 pieces without the use of an expensive CNC machine.

I tried a hole drill, but that didn't work, as it pulled the seams.
 

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steveastrouk (author)SpliceNDice2010-01-24

For a 1000 pieces, I'd look at fitting the punches to a fly-press. How big a piece of turf are you working over ? 

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AndyGadget (author)SpliceNDice2010-01-23

OK - Forget the nail scissors #;¬)

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jtobako (author)2010-01-23

Take the 1" hole saw and grind off all the teeth, then grind the edge sharp (careful not to loose the temper of the metal).  Then use the drill press, without turning it on (or maybe on very slow), to press the 'cookie cutter' into the mat.  The problem with the original hole saw is that the teeth will pull fibers, not cut them.

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SpliceNDice (author)jtobako2010-01-23
Wow. I really like your advice jtobako!  Thanks.

However, since i'm not really great at grinding, is there an already made hole saw (minus the teeth)? Like a circular x-acto knife.
 

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Jayefuu (author)SpliceNDice2010-01-24

You might be able to find a cookie cutter that will fit in the circle cutter slots.... cookie cutters have no teeth...

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jtobako (author)SpliceNDice2010-01-23

Probably, try someplace that sells leather working tools.  Or search Google for a round cutting punch.

The only other one I know of is used by doctors to cut out bits of skin : P

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RavingMadStudios (author)2010-01-23

The tool you're looking for is called an arch punch. Here's a link, but you can sometimes find them much cheaper on eBay.

http://www.google.com/products/catalog?q=osborne+arch+punch&rls=com.microsoft:en-us:IE-SearchBox&oe=UTF-8&sourceid=ie7&rlz=1I7FUJA_en&um=1&ie=UTF-8&cid=16205402702019844455&ei=JLpbS7r7PMmXtgfVwo2uAg&sa=X&oi=product_catalog_result&ct=result&resnum=5&ved=0CBwQ8wIwBA#ps-sellers

It's more or less the same kind of thing that jtobako was suggesting, only it's made for punch cutting already.

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Nice! Thank you.

So i'm guessing you use a hammer with an arch punch?

Are these blades super sharp? Because the bottom portion of the synthetic grass is pretty tough. 

I used lemonie's advice and easily cut with an x-acto knife.  But if this arch punch works that much quicker, I'm all for it.
 

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user

Yup, just place it and pound it with a hammer. You also need a resilient backer, like a scrap hunk of pine. They are commonly used to cut through thick leather or multiple layers of canvas, so they are plenty sharp. I'm guessing you'd get best results on your turf if you went at it from the back side, but that's just a guess.

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Re-design (author)2010-01-23

Get a 6" long piece of 1" od pipe and grind the end of it sharp from the inside so that the cutting edge is the outside edge.  If you're only cutting one or a few holes it's cheap, it works and you can get it tomorrow.

Oh,  to make the cut put the sharp end where you want the hole and hit the blunt end with a hammer or mallot.  Wear gloves and EYE protection anytime you are hitting metal with a hammer.

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RavingMadStudios (author)2010-01-23

Not sure what happened on my other answer, but that should read "sometimes you can find them much cheaper on eBay".

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lemonie (author)2010-01-23

Place a 1" cylindrical object on the mat and cut around it (carefully) with a very sharp knife.

L

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AndyGadget (author)2010-01-23

No experience of this myself, but you're going to need to stiffen it up to stop things flapping about afterwards - How about a piece of iron-on adhesive fabric.
Draw the 1" circle on it first, iron the fabric on in the right place then fold in half, snip a slit to start and carefully cut around the outline with a pair of curved blade nail-scissors.

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