08-20-2017, 05:00 PM
#1
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As a follow up to my thread "Making a Brush" I thought I'd share a few ramblings that went in a slightly tangential direction...

I used 3D printing to test the original design and make refinements to the dimensions.  Here are some of the low resolution prints from the early protoyping...

[Image: l0uxv6N.jpg]

One of these was eventually used to make a mold for some cast concrete handles I made, but getting the print smooth enough for casting was, well, a pain in the neck.  Cast handle is on the left and the 3D print used to make the mold is on the right.

[Image: 35lAT6U.jpg]

In pursuit of a "cleaner" print for mold making, I spent some time going back and forth with the printer and testing different materials and resolutions and ended up with this motley crew of prints...

[Image: SGzMBeW.jpg]

The one on the left is "clear" and the third from the left is a flexible, super-ball type material.

[Image: MCEoJQL.jpg]

None of these really panned out for mold making.  There were still too many defects and layering from the printing process.  But the materials themselves were intriguing and had an interesting feel in the hand.  So I decided to pursue this line of thought further...

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 08-20-2017, 06:49 PM
#2
  • chazt
  • Senior Member
  • Bayside, NY
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Fascinating. I'm looking forward to seeing how this continuing project develops. Your original thread was a marvel. Cool stuff!

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 08-20-2017, 07:39 PM
#3
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Very cool.

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 08-21-2017, 09:01 AM
#4
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Even though the finish wasn't perfect on the prints, I did some test fits with knots to get an understanding of the look and feel of a "complete" brush...they are a bit ugly, but felt good in the hand.  The light grey handle is hollow which lowers the printing cost.

[Image: BocCsdZ.jpg]

[Image: ed6Bu8A.jpg]

[Image: nJw3PsI.jpg]

As a reminder, this is what the wood versions look like...

[Image: OTASd21.jpg]

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 08-21-2017, 09:48 AM
#5
  • chazt
  • Senior Member
  • Bayside, NY
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Tom, that wood handle looks rich. I don't remember; what's the species?

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 08-21-2017, 10:28 AM
#6
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It's walnut with an African Blackwood trim.  There was another version that had faux ivory trim as well.  Thanks!

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 08-21-2017, 11:44 AM
#7
  • Nelenea
  • Junior Member
  • North Mississippi
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The superball material...  would that eliminate handle breakage from dropping?

good looking brushes btw

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 08-21-2017, 11:56 AM
#8
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Charcoal goods offers brushes where the handle is 3-D printed.  They look different though.

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 08-21-2017, 03:01 PM
#9
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(08-21-2017, 11:44 AM)Nelenea Wrote: The superball material...  would that eliminate handle breakage from dropping?

good looking brushes btw


Haha...yeah, I tried it.  It didn't break but it didn't bounce very much either!  Smile

(08-21-2017, 11:56 AM)bkatbamna Wrote: Charcoal goods offers brushes where the handle is 3-D printed.  They look different though.

Very cool.  Thanks for pointing me in that direction.  Hadn't seen those.

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 08-21-2017, 05:15 PM
#10
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Tom, once you have the design dialed in you might want to try printing through Shapeways in ultra-detail. It's expensive, but has the tightest finish and highest resolution of any print material/technique I've encountered.

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 08-21-2017, 05:28 PM
#11
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Thanks Shane!  Great info.  I'll check it out.

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 08-22-2017, 08:21 AM
#12
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After some back and forth with the printer about print quality and materials, we moved forward with a new prototype.  The print quality was much better with no visible layering and very few "defects" in the print.  Some of you may have noticed this in some of my SOTD posts -- I referred to it as the "ghost".

[Image: jK3U9SS.jpg]

Mocked up with a knot...

[Image: zXyAW98.jpg]

With the knot temporarily set for testing...

[Image: 4F6OmsI.jpg]
[Image: 8cG1sFF.jpg]

As I indicated before, the handle is hollow, so relatively light.  Part of my next steps are to fill the hollow with epoxy to add a bit more heft.  Overall though, the brush behaved very well in the hand.  I used a 24mm TGN fan...a bit small for a 28mm socket ( Shok) but I like the medium density feel and the flow through with this setup.

The white material reads very well and feels good in the hand.  Next step was to see if we could get one of the darker materials to print as well...

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 08-22-2017, 09:41 AM
#13
  • Mel S Meles
  • On the edge, ouch
  • 44.4899° south of the North Pole
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(08-22-2017, 08:21 AM)wreck | fish Wrote: [Image: jK3U9SS.jpg]

The white material reads very well and feels good in the hand.

Yes, yes, but . . .  

The poster that it sits on is very hard to read.  We need to start a thread in The Parlor in which people are encouraged to guess what is in the background of 'wreck | fish' postings.   My

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 08-22-2017, 10:52 AM
#14
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 08-23-2017, 08:33 AM
#15
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After a lull during the summer holidays, a package arrived with a new print.  Given the success with the white material we printed one in the lighter grey and it came out great.  Finish is very smooth, no layering in the print...it's a semi matte finish, not entirely matte, but not glossy by any means. 

[Image: 6OLbWon.jpg]

[Image: B4lpvJP.jpg]

[Image: 7XhT3HX.jpg]

Next steps are to temporarily set a knot and give it a spin...

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 08-24-2017, 06:22 AM
#16
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Looks good!

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 08-24-2017, 09:53 AM
#17
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These look neat, especially the combo of texture and color on a few of them. I like the combination with the wood handle as well.

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 08-24-2017, 05:28 PM
#18
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Thanks gents...

There is more to come.

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 08-24-2017, 06:12 PM
#19
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Very cool handles, I dig that white one.

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 08-25-2017, 07:14 AM
#20
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Thanks!

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