Ponoko

Delrin - White

0.032 inches 0.091 inches 0.125 inches 0.193 inches

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There are 5 images for this material

What is it

Delrin is a lightweight, low-friction, and wear-resistant thermoplastic capable of operating in temperatures in excess of 90 degrees celsius (approximately 200 degrees fahrenheit).

How fast will this material ship?

Orders using this material will ship as fast as same day. Find out more.

Can I get a sample?

You can get a sample here.

Design Notes

Delrin is an engineering plastic and supplied to us without protective covering. As such the material is prone to scratching which most apparent on black. If you are considering making an 'appearance' product like jewelry acrylic is a better alternative.

The manufacturers tolerance for the thickness of the materials is as follows:

Material thicknessPossible Range
inchesmm
0.032” / 0.8mm0.028" - 0.035"0.7 - 0.9mm
0.091” / 2.3mm0.081" - 0.100"2.0 - 2.6mm
0.125” / 3.2mm0.113" - 0.139"2.8 - 3.6mm
0.193” / 4.9mm0.174" - 0.212"4.4 - 5.4mm


Engraving Delrin

Derlin can be engraved however the engraving does not contrast in the same way as acrylic so the details stand out as well. There are 3 types of engraving possible with laser cutting. Area engraving, line engraving and a combination of both.

Area engraving is great it you need to mark a large area on the surface of the material. To specify area engraving set your shapes to have a fill color of black with RGB values of 0, 0, 0. The way this engraving is performed is like an old dot matrix printer except instead of dots of ink it uses pulses of the laser beam. This is a surface finish not deep enough to be used for pocketing or inlays. The depth of the engraving ranges between 0.1-0.5mm.

Line engraving is like a really shallow cut. To achieve this effect the stroke color to red with RGB values of 255, 0, 0 and set the stroke style to a width of 0.01 mm. The laser beam follows along the red lines that you have in your design and marks the surface of the material. The result is crisp but it can be a time consuming technique if you have a lot of small details like text.

Using a combination of both engraving types typically gets the best result. Set your shapes to have a fill color of black with RGB values of 0, 0, 0, the stroke color to red with RGB values of 255, 0, 0, and set the stroke style to a width of 0.01 mm. The line engraving causes the laser beam to trace around the edges of the engraved areas making them more crisp and bringing the details to life.

Construction Techniques

Creating structures from delrin can be tricky due to variations in the material thickness. Creating a design that can accommodate variations in the material thickness is the best way to go.

For some tips on how to design for plastic see this post.

Additionally the laser cuts at a slight taper (1-2 degrees) since the laser beam is shaped like a cone. The tapering causes one side to be slightly smaller than the other side. The taper is almost unnoticeable in 1/8" material; the thicker the material, the more noticeable the taper. When using laser-cut parts such as wheels or gears, you might need to position the parts in an alternating pattern so that the tapers “cancel out”.

Typical Uses

Delrin is commonly used for making drones, electronics enclosures, hardware mounts, washers and gaskets, bokeh filters, guitar picks, stencils etc

Adhesives, joints and fastenings

Delrin is very difficult to bond using solvents. It is possible to bond using a combination of surface treatments and expoxy or polyurethane adhesives. It is possible to bond by melting. Screw joints should be pre-drilled to avoid splitting.

Tips from other designers

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Alison says:

Looking for something like this, but flexible for light diffusion. Any suggestions?

Added about 5 years ago. ( delete )
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Michael says:

Anyone know how flexible this material is? Or how rigid rather? I need to know at different thinknesses.

Also have the thickness issues been resolved? It now shows .8mm as the smallest one. To make a 3d object that uses a slot to fit pieces together, we need to know the exact actual thickness.

Added over 4 years ago. ( delete )
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Josh says:

Hi Badweasel!

Thanks for checking on this. Delrin has a similar rigidity to acrylic, but is less brittle.

The 'flexibility' of a material is a hard thing to quantify and depends on the size and geometry of your design. The best thing you can do is prototype your design in a specific material/thickness and assess the results.

Regarding thickness, all sheet materials have a thickness tolerance - or potential variation in thickness from what is listed by the manufacturer. In the case of Delrin this is around +/- 10%. The best thing you can do is ensure the vital dimensions required to connect your parts together are ones you are cutting. You can find out more about interlocking plastic designs here:
http://support.ponoko.com/entries/498833-get-the-best-results-from-interlocking-acrylic-designs

Added over 4 years ago. ( delete )
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Alan says:

Is Delrin food safe?

Added 4 months ago. ( delete )
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Jason says:

Hi Alan,

While some of our materials may be food safe both before and after laser cutting, there has been no research by us or any others to confirm that any materials are in fact food safe, particularly after laser cutting.
So unfortunately the response we have to give is please consider that all materials are not food safe. This way we’ll all be safe.
I hope this sensible blanket rule makes things simple, albeit inconvenient, moving forward.

Thanks!

Added 4 months ago. ( delete )

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