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Thread: 3D Puzzle's
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5th February 2020, 11:55 PM #1SENIOR MEMBER
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5th February 2020 11:55 PM # ADSGoogle Adsense Advertisement
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6th February 2020, 10:50 AM #2.
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They look good where did you get the plans from or did you do them yourself?
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6th February 2020, 12:48 PM #3SENIOR MEMBER
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7th February 2020, 12:12 PM #4Taking a break
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Can't see burn marks so I'm assuming it's a router and not a laser. How did you hold everything down? Vacuum table?
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8th February 2020, 01:28 PM #5SENIOR MEMBER
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9th February 2020, 09:48 AM #6Senior Member
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I imagine double sided tape would be about only way.
Vacuum does not work well for small pieces.
I broke my only 1mm endmill before I could really use it, what cut depth and speed if you don't mind sharing?
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9th February 2020, 10:58 AM #7Taking a break
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Vacuum can work for small parts, but you have to zone it properly and be a bit tactical with how you cut
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9th February 2020, 09:57 PM #8SENIOR MEMBER
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11th February 2020, 08:09 PM #9Taking a break
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The trick is to leave everything attached for as long as possible; back when I was running a big CNC router I used to cut a full sheet of parts, leaving about 1mm at the bottom of the cut and then go back over and cut everything out. This meant that I had full vacuum to hold the sheet while doing all the heavy cutting, but only a tiny amount of tool pressure as the parts were separated from the sheet so they didn't shift around.
Using this method means you can keep your normal speed/feed, so there's no extra heat and tool wear from running slower, but you also get to keep all your parts.
IMAG1543.jpgIMG_20191209_212010.jpg
Obviously, I had a LOT of vacuum to play with (10hp pump, sometimes making up to 9 tonnes per square metre of negative pressure), so you might need to fiddle with speed and depth for your separating pass, but that's the general idea. Using a down-cut spiral for your finish pass will also be a big help with keeping things stuck down if you're able to swap tools easily.
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11th February 2020, 08:17 PM #10SENIOR MEMBER
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Thanks for the tips. I have a vacuum table from a German supplier. It did not do enough research on it. Now it's stripped and in storage atm. I might make one myself sometime.
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13th February 2020, 04:55 PM #11Senior Member
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The things you learn. I'll keep it in mind if I ever go the vac route.
I actually use masking tape on the bed and workpiece and simply superglue the back of the tape together. A lot cheaper than double sided tape.
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14th February 2020, 07:24 PM #12SENIOR MEMBER
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Your tape idea sounds great, did you use masking tape?
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17th February 2020, 09:05 PM #13Senior Member
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Yup, the 32mm stuff from bunnings. Bear brand, 3M is better and nothing needs to be fancy about it.
Then the cheapest superglue I can find.
Only thing is that you need to remember the 0.2mm lift to the workpiece, which in many cases helps me as it means I can cleanly cut the wood without eating my wasteboard.
Link to a you tube vid showing how it's done, plenty of others out there.
YouTube
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17th February 2020, 11:41 PM #14SENIOR MEMBER
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24th March 2020, 03:15 PM #15SENIOR MEMBER
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Installed a better dust extraction setup. Will install a bin full sensor and automate the setup next
IMG20200324143654.jpg
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