Any idea how much this is going to cost? I'd like a quote so I can go to shop that broke mine to reimburse me.

Quote from: ragecage23 on May 24, 2015, 08:14:07 AM
Any idea how much this is going to cost? I'd like a quote so I can go to shop that broke mine to reimburse me.

That is a hard question and an easy one at the same time.

Its easy because I estimate the material volume to be about 6 cm3. That means the part itself can cost about $7 for ABS and about $30 for steel. You likely have to add some handling costs which is less than $10 most of the time. Its also likely the part has to be shipped within your country so add some local shipping costs to that.

Its hard because we may run into a problem with the nipple. The nipple is a round object and ABS is printed in layers. When the nipple is placed horizontally like I did in the picture the layers might be too visible and compromising the airtightness when you put a hose around it. Object orientation in the printer might be an issue. After all we're looking for a plug&play part and not something that needs to be sanded down or polished before installation. We may have to prototype it first to see how its working out before you can go to the shop and talk about reimbursement of this part.

If I read correctly J_Walker is able to print 3D stuff so maybe he can help prototyping.
Depending on the cost I'm willing to chip in for a bit by having a prototype printed. After all we are now engaged in some really next level shaZam! even though on this day and age it may not look like it. Some dude at the other side of the planet has this tiny broken piece of plastic, some other guy takes measurements and another person is doing the modelling. Finally something real rolls out of a printer somewhere. We're doing something pretty cool and creating stuff while sitting on our ass. Sitting on my ass is my favorite way to do things.
I might be able to get it done at college, I heard they have some 3D printers in the architecture lab so that might even get me going for free. Else I can find a local hub and get something printed, wouldn't even need to have it shipped I can just pick it up.

Now I'll go back to sketchup and see if I can whoop some ass on those round surfaces 


-edit
done with the first version of the model:





As expected sketchup kinda gave me a hard time with the round shapes and I couldn't remember how I managed to model the carb slide guides but hey it worked.
Price will go down a bit because the actual material volume turns out to be 4,4 cm3. My first estimation was 27% too high hehe.

Getting this printed in nylon or steel would be no problem. ABS is going to be a slightly bigger challenge because the nipple is floating in the air and I guess its kinda hard to deposit molten ABS on nothing. Lets see if we can take this to the next level 

I could still use an answer on this though 

Quote from: kapiteinkoek on May 24, 2015, 07:35:17 AM
I understand that this is a vacuum supporting thing but how is it sealed airtight? Is there an o-ring or something?

I also added the part to shapeways for adventurous people who like experiments.

Quote from: kapiteinkoek on May 24, 2015, 10:51:10 AM
After all we are now engaged in some really next level shaZam! even though on this day and age it may not look like it. Some dude at the other side of the planet has this tiny broken piece of plastic, some other guy takes measurements and another person is doing the modelling. Finally something real rolls out of a printer somewhere. We're doing something pretty cool and creating stuff while sitting on our ass.

That's Why I'm IN!

I'll increase thickness of the 'ceiling' because its springloaded. Good pictures thats what I needed.

...... I'm still amazed and 'firm' about printing in stainless steel!!? ...

3d printing. .  Been aware of it from tv/online for a while.... but. .. holy crap! How clever and tricky are people to come up with an idea like a 3d printer in the first place! ... then. ... then! We have members on here that understand the modelling process! .. dang! ! .. this is a very cool time in future history to be alive!

Updated the model with thicker ceiling. I put a dent in it because it contributes not much to strength and saves material cost.




Steel version, looks neat eh 


Also I'd like to know if this is the most convenient place for the nipple. I assume it breaks because the plastic becomes brittle with age, somebody takes off the hoses for maintenance and then it snaps.
Or does the nipple snap because it is in an inconvenient place (tension on the hose) and snaps because of that?
Or maybe there is simply a better place for the nipple? We have pretty much the freedom to put it anywhere we want so if it helps we should take that chance.

Hey guys, I just heard of this yesterday actually. if you google your nearest city and just put in "Hackerspace" you will get local places that have cool things like CnC machines, 3d printers and tools and stuff. they are all private run and all and from my understanding how they work is they have a open house once a month and you have to pay a monthly or yearly fee in order to use the buildings.

I would go to my local one, but its about an and hour and forty minutes away.. so not very local...

Sounds a bit like 3Dhubs that lets you have acces to the 3D printers of other people. Its kinda what I'm aiming for. If things work out you can basically get it printed in ABS at some random dudes place in your town or one near you.

I plan to have one printed at a local hub so I'm working on a model that can be done on these consumer printers.


Nipple faced upwards so there can be an airtight seal even if the printer leaves some grooves in it.

Getting some info on the printers, if its going to deal with the overhang itself or that I have to support it by a secondary structure.

That angle is good.
It breaks because it gets brittle.

my problem with doing it upwards is the flatness of the angle. 3d printers the best ones are only good up to like 0.05? if you print it flat, and slightly large, just hit it on a belt sander at 90 degrees. to flatten the grooves.

I can accept the need for sanding down the bottom because thats very easy and done in a matter of seconds. The nipple should be good to go because thats too much work and too hard to sand or polish. Everything else is just a visual aspect that doesnt really matter.

If the nipple was in its normal position, why not just add a thin rib along the bottom of the nipple? Like a yacht keel... just enough to support the print but could be trimmed out with a craft knife if it was abs or nylon?

Because it wont be anywhere near a perfect cilinder. When you put a hose around it there will be gaps over the length of the entire nipple -> it will leak air. When the nipple is faced upwards sure there may be a 1000 grooves on the nipple but every single one may be good enough to provide an airtight seal.

When the nipple is printed horizontally you get something like this

exaggerated picture obviously but I guess you get the idea.

I assume this is less of a problem at shapeways/imaterialise etc because of the different technique they use to print nylon/metal and because they are more accurate.

Could you print me an entire, working GS, and give me the pricing on it?

We'd give you an extra "special" price 

Like many moons ago in high school. We didn't have a vending machine, so my buddy and I snuck in a mini fridge and started buying flats of 12oz cans for 8 cents a can. Seniors paid 50 cents / Juniors and Sophmores paid 75 / Freshman Paid $1.
We made off like bandits  until we got busted 

Ahhh gotcha on the orientation situ! ... but. .. won't the inner parts be like the picture then?

You want a printed GS meelee?  ... I thought you didn't like the one you have?

Quote from: Janx101 on May 25, 2015, 08:26:56 PM
Ahhh gotcha on the orientation situ! ... but. .. won't the inner parts be like the picture then?

Apart from the flat bottom the rest of the object can be as rough as anything because that doesnt have to provide an airtight seal by being in contact with something else. The material just has to be there and keep things together.

-edit

figuring out the support structures is going to be a pain in the ass. I'll leave that for the slicing software and we'll see what rolls out. I'm going to put out an order in a hub near my place (14 miles away). Its a guy with 2 Ultimaker2 printers able to put out ABS in high detail. He is pretty cheap too.
A single object will cost me $0,95 on material (yes you read that right). He asks for startup costs ($3,30) and some taxes ($1,32). Since the material cost is so cheap and startup costs stay the same I might as well order more than 1 piece. I'll get 2 horizontally placed models and 2 vertically placed models. Brings us to the staggering amount of $8,50 for a total of 4 parts. Then we'll see how well it turned out.

I did notice a potential problem, the glass temperature of the ABS filament used to print this kind of stuff is about 105 degrees and its printed at 200+ degrees. How well this stuff is going to hold up we have yet to see. I reckon stuff like Lego would hold up just fine and thats ABS so I got my hopes up. When we manage to print it I could conduct an experiment by springloading the part and simply put it behind the cilinderhead (I dont have carbs like this) of my GS500.
I will also perform an airtightness check.

Can I nominate this thread for top thread of 2015?

It's beyond cool.