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#51 2015-07-15 04:27:10

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,379

Re: Those Q700 feets

mcdermd wrote:

Or print one, clean it up and make your own silicone mold from it. Then you can cast your own in rubber.

Iterative design, printing, silicon casting and rubber molding to get the final rubber feets to come out just right may take some time. That's a lot of variables, but doable. Models made for making molds/sand casting or lost wax blanks quite often differ in size from the finished part  .  .  .  it all depends.

Raw material choice, front-n-center. tongue

Last edited by jt (2015-07-15 04:28:12)

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#52 2015-07-15 04:33:33

bbraun
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Registered: 2014-05-29
Posts: 1,064
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Re: Those Q700 feets

You can also 3d print the mold.  People seem to be big on that for jewelry and the like.  I've printed a couple for play-doh molds.  It might save a step.

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#53 2015-07-15 12:41:26

MJ313
Member
Registered: 2014-09-23
Posts: 495

Re: Those Q700 feets

jt wrote:

Raw material choice, front-n-center. tongue

So what say you, jt? Rubber or ABS? Something else? I believe you're the guy with the experience casting, right? smile

ABS has its advantages for sure, except it wasn't chosen by Apple for the actual produced part... maybe there's a debate worth having.

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#54 2015-07-15 14:45:35

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,379

Re: Those Q700 feets

The only practical experience I've had is with casting wax and lead, neither particularly appropriate.

Best place I've found for info on casting lately has been for prop making howtos. They've come a long way with latex and resin processes since the days of casting clear Duo parts. Flexibility and color match capability will be the primary determining factors.

https://www.youtube.com/watch?v=J1jDaZX6PCk *****

Latex/Latex process?

***** This guy would fit right in with the 3-D contingent of the Letterheads back in the day. Imagine a large shop filled with jamming 2-D sign painters, pinstripers and a couple of scenic artists thrown into the mix. Somewhere in the machine/workbench area would be a few idiots one-upping each other in 3-D over the course of the weekend long meet with woodcarvers etc. as a buffer zone. Gotta go back some day! tongue



p.s. This is definitely a misplaced H&M topic.

Last edited by jt (2015-07-15 15:01:11)

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#55 2015-07-15 14:55:15

MJ313
Member
Registered: 2014-09-23
Posts: 495

Re: Those Q700 feets

I was reading up on it a little bit last night and came across some flexible resins that people are printing with now. Seemed like a nice material, except maybe a bit pricey.

Rob, what kind of filament did you use for your model?

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#56 2015-07-15 15:14:35

bbraun
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Registered: 2014-05-29
Posts: 1,064
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Re: Those Q700 feets

My printer is SLA, so no filament.  I use a Form 1+ and makerjuice gray resin.  I use the makerjuice resin for screwing around because it's about the cheapest resin I've found.  It's not great though, I ended up breaking one of the printed feet trying to take it off.  They've got some new resins out, including a flexible resin and a 'tough' resin, but they're fairly pricey at about $200/L.  FWIW, the model I made is about 5.44mL, but there's a ton of other consumables in SLA printing (resin tank, finishing alcohol, etc.).

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#57 2015-07-15 15:19:51

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,379

Re: Those Q700 feets

ISTR the flexibility indices of a couple of latex formulations mentioned in that video. If one's available in a rigidity correct, color friendly formulation, that's the way I'd go. Splitting the latex mold just right allows for the mounting "wedges" to be cast into rubbery feets for authenticity. No feets feet non-skid inserts required.

@ bbaun: fab work, buddy. I hope someone adds the fillet to the inside corner of your model. You're using a stereo-lithography type printer, correct? The feet form seems perfect for heat-smoothing a filament printed pattern for a latex/latex process. smile



edit: beat me to it! Got SLA linkage?


http://www.smooth-on.com/gallery.php?galleryid=096

Last edited by jt (2015-07-15 15:23:29)

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#58 2015-07-16 09:22:43

uniserver
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From: Sf, Mi
Registered: 2014-05-15
Posts: 955
Website

Re: Those Q700 feets

wow i never looked at the Form1+,  or the price.. hopefully I don't sound too cocky... but for that kind of money i would want the ability to print new powerbook 1XX plastic's   and that tank is just not big enough.   if i was going to spend that kind of money that is what i would need to be able to do with it. 

but i can't say that i wouldn't use it to build clear Cases for ADB mouse, and Tear drop mouse.  or clear keys  or all kinds of clear shit. maybe clear hard drive lids then i could be like hap and see the hd spin.

i don't know its a rich mans hobby, unless i can some how get a company to buy one for me, and print shit for them?  i dunno.


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#59 2015-07-16 09:31:30

uniserver
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From: Sf, Mi
Registered: 2014-05-15
Posts: 955
Website

Re: Those Q700 feets


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#60 2015-07-16 09:36:07

uniserver
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From: Sf, Mi
Registered: 2014-05-15
Posts: 955
Website

Re: Those Q700 feets

darn it ... here is an interesting option... BYODLP lol

http://www.ebay.com/itm/Sedgwick-TM-3D- … 28028dde3f


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#61 2015-07-16 09:38:17

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 955
Website

Re: Those Q700 feets

looks like its all about the juice


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#62 2015-07-16 16:04:20

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,379

Re: Those Q700 feets

D'oh! tongue Materials choice research time. wink

@ bbraun: your resin is durable and accurate, how resistant to heat might it be?

I'm thinking of slagging down redundant SpindlyPlast(c) scrap, adding plasticizer and having a run at drip/injection molding ABS in the proper color. How easy is it to scale/adjust your model to allow for the cooling shrinkage involved in the interval between injection/ejection to get the proper finished size?

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#63 2015-07-16 16:45:14

bbraun
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Registered: 2014-05-29
Posts: 1,064
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Re: Those Q700 feets

There's a bunch of different resins out there, and I've only got 2.  The cheap one, which is neither durable nor accurate, and a clear one which is not durable, but is accurate.  Accuracy can vary greatly depending on how the model is oriented when it is printed.  There's a casting resin available now, primarily aimed at jewelry makers and doesn't leave residue when casting metals in it.  Presumably that should be more than sufficient.

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#64 2015-07-16 19:26:31

MJ313
Member
Registered: 2014-09-23
Posts: 495

Re: Those Q700 feets

Forgetabout all this high-tech mumbojumbo!
I'm getting this here stuff.
http://www.amazon.com/Versimold-VM0013W … =versimold

Squish it on there, mold it around, bake it or hit it with the heat gun.

Boom. Feets! smile

Actually, using some fine-tuned slicing at the end, it might not be such a wild-arse idea... and the stuff comes in red too tongue

Last edited by MJ313 (2015-07-16 19:47:07)

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#65 2015-07-16 19:46:52

uniserver
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From: Sf, Mi
Registered: 2014-05-15
Posts: 955
Website

Re: Those Q700 feets

yeah that product might work if someone could make a mold with a 3d printer then just bake it?


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#66 2015-07-16 19:50:41

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 955
Website

Re: Those Q700 feets

ok so MJ you are in charge of getting the mold and then being the feets seller guy.
:-)

I would like to place an initial order about 12.  I have 3 q700's i want to keep around.


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#67 2015-07-16 20:21:17

MJ313
Member
Registered: 2014-09-23
Posts: 495

Re: Those Q700 feets

No problem boss... what color do you want them in?  And don't say beige. Live a little. smile

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#68 2015-07-16 20:50:54

bbraun
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Registered: 2014-05-29
Posts: 1,064
Website

Re: Those Q700 feets

Apple rainbow.

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#69 2015-07-16 21:10:13

TheWhiteFalcon
Member
Registered: 2015-04-27
Posts: 504

Re: Those Q700 feets

Key Lime Pie.

Or Flower Power.

Last edited by TheWhiteFalcon (2015-07-16 21:10:27)

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#70 2015-07-17 00:43:18

uniserver
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From: Sf, Mi
Registered: 2014-05-15
Posts: 955
Website

Re: Those Q700 feets

light grey :-)


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#71 2015-07-17 13:22:03

MJ313
Member
Registered: 2014-09-23
Posts: 495

Re: Those Q700 feets

uniserver wrote:

light grey :-)

LOL. you're an easy guy to make happy... bbraun and TWF have some more challenging ideas.

I've got two ideas to make this happen but need to get some materials testing done which will involve some time and effort. I will be using bbraun's and mcd's images, measurements and scad file. So thanks again for those!

I am not divulging what I plan to do yet, because if it fails in a flaming ball of crapola I want to be spared the ridicule. Cause you know, The Internet is Forever. tongue

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#72 2015-07-17 15:03:40

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,379

Re: Those Q700 feets

I've left piles like that all over the RetroMac community. For this stuff, he journey is more important than the destination. Willingness to try anything trumps managing to do something in my book.

Something/Anything Todd Rundgren

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#73 2015-07-17 15:08:41

MJ313
Member
Registered: 2014-09-23
Posts: 495

Re: Those Q700 feets

I think determining the material I want to make these out of is the correct place to start.

big_smilewink

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#74 2015-07-17 16:07:53

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,379

Re: Those Q700 feets

Since you're looking at molding materials:

< over the top mode >


Anyone ever seen antique furniture feets in the ball and claw tradition?

http://www.furniturelibrary.com/use-of- … ign-motif/

BallClaw_5_xl.jpg
http://www.finewoodworking.com/item/404 … n-sketchup

ball-&-claw-foot.jpg

Ball's gotta be clear  .  .  .  add HDD access LEDs wink
BC2301BALLANDCLAWFOOT.jpg
http://www.donsfurnitureclinic.com/furn … c2301.aspx


< /over the to  .  .  .  .

.  .  .  not freakin' likely. roll

Last edited by jt (2015-07-17 16:15:30)

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#75 2015-07-17 16:20:57

mcdermd
Member
From: Corvallis, OR
Registered: 2014-05-12
Posts: 940
Website

Re: Those Q700 feets

big_smile big_smile big_smile

I laughed a lot, jt. Then I realized I would rock those things like nobody's business.


Daily Drivers: 27" iMac 2.8 GHz Quad-Core i7 (Late 2009), 21.5" iMac 2.7GHz Quad-Core i5 (Late 2013), 11" Macbook Air 1.6 GHz i5 (Mid-2011)
See the restored heroes here.

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