Aluminium engraving - front panel

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PsyKo
Posts: 430
Joined: Thu Aug 30, 2012 8:42 pm
Location: France

Aluminium engraving - front panel

Post by PsyKo » Mon Oct 13, 2014 5:19 pm

Hello folks,


I've been running some test on alupanel (HDPE layer caught between 2 0.3 aluminium sheets) in order to do a front panel for my enclosure.
Worked pretty well, but had to fill the toolpath with paint to give higher contrast.

0.5mm 0.8 1 flute endmill
200 mm/m
0.2 mm/pass

Edit : fixed endmill size from 0.5 to 0.8mm

Below are the results :
engrave_IMG_1392.jpg
From right to left : 0.3 45° engraving V-bit, 1.5mm 2 flutes endmill, 0.8mm 1fulte endmill
engrave_IMG_1392.jpg (311.84 KiB) Viewed 2229 times
engrave_IMG_1399.jpg
End results
engrave_IMG_1399.jpg (220.5 KiB) Viewed 2229 times
Last edited by PsyKo on Mon Oct 13, 2014 6:41 pm, edited 2 times in total.
Shapeoko #736
Kress 800, Z Axis upgrade, dual Y, 600mm X&Y rails, metal spacers and V Wheels, home switches, 4th axis
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Schruminator
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Re: Aluminium engraving - front panel

Post by Schruminator » Mon Oct 13, 2014 6:17 pm

That looks pretty slick. And a 0.5mm endmill is awfully tiny-- did you have any issues with breaking or bogging it down?
1.8m x 1.0m SO2 #3638 / Vectric Aspire / ACME Z-axis / View my photography at http://www.mschrum.com

PsyKo
Posts: 430
Joined: Thu Aug 30, 2012 8:42 pm
Location: France

Re: Aluminium engraving - front panel

Post by PsyKo » Mon Oct 13, 2014 6:40 pm

Yeah, I broke one running it too fast. I first tried at 400mm/min. It broke after a few seconds. Slowing it down to 200 did the trick.
Your message made me realize it was not 0.5mm but 0.8mm endmill. First post edited
Shapeoko #736
Kress 800, Z Axis upgrade, dual Y, 600mm X&Y rails, metal spacers and V Wheels, home switches, 4th axis
Goko - Free CNC Control Software - http://www.shapeoko.com/forum/viewtopic ... 380#p44380

msg558
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Joined: Sun Jan 27, 2013 5:41 pm
Location: Fort Worth, TX

Re: Aluminium engraving - front panel

Post by msg558 » Thu Oct 16, 2014 3:23 pm

Looks really good. What was your method for filling the toolpath with paint?

PsyKo
Posts: 430
Joined: Thu Aug 30, 2012 8:42 pm
Location: France

Re: Aluminium engraving - front panel

Post by PsyKo » Thu Oct 16, 2014 3:54 pm

It's actually pretty simple :
1. Spray it with paint so the toolpath is fully covered.
2. Wait a few seconds, something like 30 for me (maybe not necessary)
3. Whipe the panel with a dry cloth. At this point there will be some paint smudge.
4. Remove the remaining paint with a cloth "humidified" with thinner. The paint in the toolpath should stay.
Shapeoko #736
Kress 800, Z Axis upgrade, dual Y, 600mm X&Y rails, metal spacers and V Wheels, home switches, 4th axis
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zerblatt007
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Re: Aluminium engraving - front panel

Post by zerblatt007 » Fri Oct 17, 2014 7:49 am

Very nice result.
But if you have to paint it anyway, is it any point in using the sandwich panel instead of solid aluminium?
Is it cheaper?
Shapeoko #958: Dual-Y drive, Double-X, Belt on outside, 1m Y-Axis, Acme Z, Opened up and boxed in. Kress 1050 Spindle.

PsyKo
Posts: 430
Joined: Thu Aug 30, 2012 8:42 pm
Location: France

Re: Aluminium engraving - front panel

Post by PsyKo » Fri Oct 17, 2014 12:20 pm

zerblatt007 wrote:Very nice result.
But if you have to paint it anyway, is it any point in using the sandwich panel instead of solid aluminium?
Is it cheaper?
You're right. There is no reasons to use the sandwich panel. I tried this because I though that the HDPE would look dark black and wouldn't require paint. I was wrong.
Actually it was kind of dark-grey and the result is much better with paint. So the next one will be in aluminium panel.

This was a free sample, so I have no idea of the price compared to aluminium. It's for sure lighter.
Shapeoko #736
Kress 800, Z Axis upgrade, dual Y, 600mm X&Y rails, metal spacers and V Wheels, home switches, 4th axis
Goko - Free CNC Control Software - http://www.shapeoko.com/forum/viewtopic ... 380#p44380

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