Acrylic pens no no's - Page 2 - Woodworking Talk - Woodworkers Forum
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post #21 of 27 Old 12-23-2015, 02:27 PM
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Originally Posted by stairsq View Post
I use a high speed for turning, also I used a high speed while sanding with 250, 350, 400, 600, 1200 and 2000 wet dry sanding paper, after this I slowed the speed down and used MM pads 3600, 4000, 6000, 8000, and 12000.
While I'm no expert, I do ALL my sanding on slow speed (500 or so). After turning my acrylic pens, I typically use 240, 320 & 400 abranet following by the whole set of micrimesh (1500-12000). Since I have a Beall buffing System, I follow up the sanding process with polishing using the red tripoli and white diamond. Thats where I stop. After all this is accomplished, then I assembly my pens.
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post #22 of 27 Old 12-23-2015, 09:31 PM
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You guys are making this way too complicated. Turn your acrylics with a small skew(1/2"). If it's sharp, and it will dull a little after a few pens, it will cut clean. I hit it with some 400-600 sandpaper. It will have a dull finish at this point. Take a small piece of soft cloth, like an old white tube sock, put a dab of something like Meguiers automotive polish on it and the pen will shine right up with out much effort or time involved. Don't use much pressure, speed, I'm probably around 800-1000 rpms.
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post #23 of 27 Old 12-24-2015, 01:22 AM
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I use Micromesh up to 12,000 grit and don't need anything else. I do this wet and off the lathe.

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post #24 of 27 Old 12-24-2015, 06:57 AM
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I haven't used it on acrylic pen blanks, but on lots of other stuff, I've used micro-mesh, lubricated with water, followed by Meguiars plastic cleaner, followed by Meguiars plastic polish. Comes out like glass.
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post #25 of 27 Old 04-27-2017, 01:48 PM
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Originally Posted by PTownSubbie View Post
My one and only acrylic pen didn't turn out as well.

I actually tried two of them. The problem with the first one was the barrel inserts came out during the process of squaring the faces. I roughed up and glued the barrels the night before with CA glue and they dried all night. When I squared the faces the next morning, the barrels came out onto the bit. First set lost because I squared it down too deep before I noticed the barrel missing .

The second set glued up fine but I chipped it out on the lathe. I don't know if I wasn't turning it fast enough or was taking too aggressive of a cut but I chipped it out all the way down to the barrel. Second set lost !

When I talked to the local woodstore about it this is what they told me.

The glueing problem: They recommended a 5 minute epoxy when working with acrylics because the CA glue doesn't stick well to the acrylic.

Chipping problem: The cut needs to be more of a shearing cut and needs to be very light. A higher speed may also help the process.

I was turning it at ~2100RPM. Do I need to turn the acrylics any faster? What tool do you guys use when turning the acrylics? A normal roughing gouge to round and then what?

Planning on doing some more wooden pens until I get a little more experience. Also, has anyone turned Corian?
In the acrylic process I have found that using a thicker CA glue probably helps...the thin does not fill the minute space left after drilling out the 7mm hole for the tubes- this is because the acrylic is much denser and so the hole is much less form fitting around the brass.

However, I have had the problem of not being able to get the finish smooth enough with the polyurethane sanding mesh...does 600 grit work very well?
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post #26 of 27 Old 04-27-2017, 02:08 PM
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laser cut turning tools

Quote:
Originally Posted by PTownSubbie View Post
My one and only acrylic pen didn't turn out as well.

I actually tried two of them. The problem with the first one was the barrel inserts came out during the process of squaring the faces. I roughed up and glued the barrels the night before with CA glue and they dried all night. When I squared the faces the next morning, the barrels came out onto the bit. First set lost because I squared it down too deep before I noticed the barrel missing .

The second set glued up fine but I chipped it out on the lathe. I don't know if I wasn't turning it fast enough or was taking too aggressive of a cut but I chipped it out all the way down to the barrel. Second set lost !

When I talked to the local woodstore about it this is what they told me.

The glueing problem: They recommended a 5 minute epoxy when working with acrylics because the CA glue doesn't stick well to the acrylic.

Chipping problem: The cut needs to be more of a shearing cut and needs to be very light. A higher speed may also help the process.

I was turning it at ~2100RPM. Do I need to turn the acrylics any faster? What tool do you guys use when turning the acrylics? A normal roughing gouge to round and then what?

Planning on doing some more wooden pens until I get a little more experience. Also, has anyone turned Corian?
to get the acrylic smoother, try using the newer style tools with the replaceable laser-cut tips
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post #27 of 27 Old 03-09-2019, 06:28 PM
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Acrylic Pen

Have my first Acrylic pen turned but want that clear glossy shine finish. Just came from Woodcraft and didnt get the Hut Glossy Finish what other product can be used to create that finish?
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