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Old 12-26-2015, 10:10 AM
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3D Print Plastic Pieces....

I think if I'm not mistaken I saw a previous post about the ashtray that looked like someone did a 3D print for the 348 design which begs another questions. How viable would it be to 3D print some of the plastic pieces that we all long for and not pay anywhere between $500 to $1500 for?

I am a newbie so if this has been spoken about or shot down, let me know, otherwise it seems feasible? Right?!
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Old 12-26-2015, 05:06 PM
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Just ask Luigi Frank, he was the one that printed that ashtray.

He might be able to print just what you need.
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Old 12-26-2015, 05:51 PM
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What pieces do you need printed?
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Old 12-26-2015, 07:10 PM
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348 right side driving light trim piece.
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Old 12-26-2015, 07:16 PM
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348 right side driving light trim piece.
I have an original for sale right now on eBay. Ask.. About 1 million dollars
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Old 12-26-2015, 07:28 PM
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I need the center AC vent...can anyone 3d print that lol?
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Old 12-26-2015, 09:27 PM
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What pieces do you need printed?
If you have a printer theres some parts id like you to print, dash vent parts haha


The cost to print quality items is a bit of an expense I can't justify. Otherwise id print my own parts. I have been thinking about getting my own but I have decided to repair my broken parts.

Last edited by phrogs; 12-26-2015 at 09:33 PM.
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Old 12-27-2015, 09:38 AM
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What pieces do you need printed?
Right side air vent / speaker cover
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Old 12-27-2015, 02:40 PM
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Originally Posted by Fmuto42 View Post
I think if I'm not mistaken I saw a previous post about the ashtray that looked like someone did a 3D print for the 348 design which begs another questions. How viable would it be to 3D print some of the plastic pieces that we all long for and not pay anywhere between $500 to $1500 for?

I am a newbie so if this has been spoken about or shot down, let me know, otherwise it seems feasible? Right?!
Hi Frank

I happen to be the guy doing the astray thing. Printing a part is not the issue, yes there are lines all over it, but you can use spot puddy on it and sand it smooth, and then paint it. The biggest cost is designing something close and will function. This takes time and sometimes a lot of time, depending on how complicated it is. Once designed you will print it to see how it fits, then make any adjustments and print it again until it is right. I printed the astray 5 times after I had a laser scan the original and then try to fit all the pieces to it correctly. Each print took about 11 hours.

My car is up on the hoist put a way for the winter but I will be lowering it down next weekend to fit my custom rear badge I've been working on. I can take a look at the piece you are talking about to see if it is do able then.



Lou
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  #10  
Old 12-27-2015, 03:16 PM
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Hi Frank

I happen to be the guy doing the astray thing. Printing a part is not the issue, yes there are lines all over it, but you can use spot puddy on it and sand it smooth, and then paint it. The biggest cost is designing something close and will function. This takes time and sometimes a lot of time, depending on how complicated it is. Once designed you will print it to see how it fits, then make any adjustments and print it again until it is right. I printed the astray 5 times after I had a laser scan the original and then try to fit all the pieces to it correctly. Each print took about 11 hours.

My car is up on the hoist put a way for the winter but I will be lowering it down next weekend to fit my custom rear badge I've been working on. I can take a look at the piece you are talking about to see if it is do able then.

Lou
Thanks Lou! Let me know if you think it's feasible. I'm still hunting out parts cars too. It's unreal what's not available anymore.
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Old 01-01-2016, 12:17 PM
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Hi Frank

I happen to be the guy doing the astray thing. Printing a part is not the issue, yes there are lines all over it, but you can use spot puddy on it and sand it smooth, and then paint it. The biggest cost is designing something close and will function. This takes time and sometimes a lot of time, depending on how complicated it is. Once designed you will print it to see how it fits, then make any adjustments and print it again until it is right. I printed the astray 5 times after I had a laser scan the original and then try to fit all the pieces to it correctly. Each print took about 11 hours.

My car is up on the hoist put a way for the winter but I will be lowering it down next weekend to fit my custom rear badge I've been working on. I can take a look at the piece you are talking about to see if it is do able then.


Lou
cool tech
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Old 01-01-2016, 12:38 PM
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I have access to 3D printing and CAD, and I've also thought about doing this recently. The only potential issue I have with it is post-processing time and material selection. Most 3D printers do PLA (corn starch based polymer, easy to print) or ABS (same thing LEGOs are made from, strong but tougher to print without warpage). I'm not sure how well these plastics will match the factory plastic color though. In addition, for something like an air vent, you may be looking at quite a bit of sanding post-print to get a nice smooth surface finish on all the vent ribs. Does anybody know exactly what the factory plastic parts are made of? Are they the same material all the way through, or is it some sort of plastic with a coating and the coating is the part that gets sticky?
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Old 01-02-2016, 03:18 PM
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Originally Posted by Fmuto42 View Post
Thanks Lou! Let me know if you think it's feasible. I'm still hunting out parts cars too. It's unreal what's not available anymore.
Hi Frank
Took a look at it today. Would be a big project to do. A lot of detail, 3d printer would not do the holes that clean. To much work to do for a one off. Sorry

Lou
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Old 01-04-2016, 01:31 PM
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Originally Posted by R&D View Post
I have access to 3D printing and CAD, and I've also thought about doing this recently. The only potential issue I have with it is post-processing time and material selection. Most 3D printers do PLA (corn starch based polymer, easy to print) or ABS (same thing LEGOs are made from, strong but tougher to print without warpage). I'm not sure how well these plastics will match the factory plastic color though. In addition, for something like an air vent, you may be looking at quite a bit of sanding post-print to get a nice smooth surface finish on all the vent ribs. Does anybody know exactly what the factory plastic parts are made of? Are they the same material all the way through, or is it some sort of plastic with a coating and the coating is the part that gets sticky?
Molded plastic that is coated with the material that becomes sticky.

Ill try to take some photos
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Old 01-04-2016, 02:53 PM
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I went ahead and yanked the vents out of my car and started to de-goop them this weekend (TON of elbow grease would not want to do again). There is a chance I would be able to make an almost perfect copy of these with the resources at my disposal, although it's going to be a ton of work to get it right (scanning will not get a good enough model to capture all of the tolerances and interplay in the motion mechanisms, and for this it matters a lot that it's correct). Would anybody buy these if I made them? I think I have a way to get them good enough that they won't look printed... I am currently doing a test print to see what's possible. More to come
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Old 01-05-2016, 09:49 PM
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Some Progress

OK here's where I'm at so far with this. I have a complete vent assembly almost modeled (few details left to add), minus the surround/throat that leads down to the HVAC distribution tube in the dash. The side vents will probably be a bit more work but nothing undoable. I'm going for exactness here so I measured all the dimensions with my Starrett dial caliper. Should be pretty much an exact reproduction minus the injection molding parting lines.

Follow the link to see the part:

https://youtu.be/9nBpI0Wy1E0
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Old 01-05-2016, 09:53 PM
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So would your center AC vent look exactly like this? I need the whole thing. If you would make the whole thing, which I'm sure is a lot of work, do you have an approximate price in mind? Or is it not even worth your time?

New Old Stock RARE Ferrari 355 Center Consle AC Heat Air Outlet Assembly | eBay
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Old 01-05-2016, 10:10 PM
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That is pretty much exactly the assembly I want to reproduce. Later I will focus on the side vent assemblies. I noticed that the other 3D printed parts on here are produced using FDM, which works OK for stuff with a lot of smooth surface area (you do have to sand a fair bit to make it smooth and get the lines out and then usually paint it). The problem is that FDM will not make this vent assembly well at all (and especially wont be able to pull off the side vent holes). In particular, the pivot points need to be very precise and smooth or they wont feel right. Also the fins will look awful if there are a ton of lines in them from printing. As such, I'm investigating my options. I currently have a test print being made with a high end SLA machine, and am considering testing out some laser sintered plastic as well. I anticipate this taking a fair amount of time as there will be some trial and error involved. As for your question of "is this worth it?", in my case I think yes. I broke my center vent taking it out of the dash this weekend (clip had previously been broken and was jammed) so I really want to make a solution. In addition, I think there may be a small side business here for me helping the Ferrari community (check out my homepage from my profile-work in progress), as I used to be an automotive engineer and currently work in a very high tech research field and my work involves using cutting edge fabrication techniques on a regular basis. As for a price it is too soon to say. I know that scrubbing the sticky stuff off my vents was hours of hand labor with Dawn and a toothbrush (I didn't want to use anything too caustic or abrasive), which I'm guessing is why stickynomore charges $390 to refinish your vents (it looks like they do excellent work from the photos on their website). I think the end goal is something that looks stock from the factory (not something that looks like it was 3D printed), and that will probably involve printing a very accurate model with a high end machine and then coating/painting the part to give it exactly the right finish. If other people are interested please chime in. For now I plan on chipping away on this as time allows.
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Old 01-06-2016, 11:43 PM
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Nice stuff. I gotta check out the YouTube
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Old 01-07-2016, 07:16 PM
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First Test Print Preliminary Photos (Before Cleanup)

Well I decided to have a test print made of the most complex and detailed vent part, the center (it has all the thumb grooves). The vendor sent me some (somewhat crappy) photos of it today before washing and it looks really good, and it wasn't even printed at the highest possible resolution for that machine. The layer height on this is 0.002" and the X-Y accuracy is better than 0.005" already. I have options to double that accuracy at the expense of longer print times. I now have a lot of confidence that this process is going to produce viable reproduction parts. My #1 target right now is to get a super accurate model of these vents, since every other interior part will be a piece of cake to reproduce afterwards. When I get the part back I'll test fit it in my factory vent and take some photos and post them. When I finalize the design files these will be printed in black plastic, not clear (the vendor's machine was already set up for clear this time so it was faster). I don't think there will be any evidence of print lines on them after cleaning.
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