air pressure air parts abs

[gianni76]

I have been experimenting for a few months using pieces made of rapid prototyping, I believe with fda technology, for direct application on grip manipulators.

in particular I have made to realize from service of the pieces in abs that I broadcast directly on manipulator and through suction cups move products

so far all right if it was not that for some applications I need to introduce in the pieces of the channels where air passes compressed to realize expulsion of the pieces in socket or cmq to bring the compressed air to commercial assemblies mounted in the area and I must always pass in the piece in abs.

My discovery at this point was that the abs with its porosity fails to contain the 6 bars of the line, especially if I have often resided due to the containment of the weights.. so compressed air ends up going out or cmq to pass even in the aspiration routes and the system does not work.

are therefore looking for an alternative material or treatment or any system to remedy this inconvenience.

asking the various suppliers there is who suggests to use primers to sponge on the piece but this would only ensure a possible seal out and cmq do not know until what point. any other suggests to pass or immerse in acetone to close part of porosity with partial "dissolving of the material" or to use glue from pistrellists etc..

If anyone had a solution to my problem, I'd beg him to meet me.

I found a site: sculpt that from as availability of aluminum production material. someone knows what it is and whether it is valid for my applications. . ?

thanks early for anyone providing help. .

 

[GIULIOGE]

I solved a similar problem by brushing the pieces with elongated epoxy resin with alcohol.
the details had been produced with a 3d size printer, the application was a socket plate with empty channels and suction cups.
before the resin the air entered everywhere and the nn suction cups took nothing, after the plate was stagna and the suction cups directly mounted on the plate took correctly. resin also improves a little mechanical characteristics and thermal residence.
Jury

 

[gianni76]

Thank you very much for your answer. I think our details are produced with the same printer. We didn't have any problems with suction, though. perhaps the degree of vacuum we used was not as high as in your case. .
can you better specify the product you use? in what state do you buy? paint brushing liquid? is simply called epoxy resin, where can I buy it? and in what percentage did you stretch with alcohol? is it feasible to immerse the piece in a bathroom so that the effect also covers the interior walls? otherwise would I have only guaranteed an outside estate?

Thank you so much again. .

 

[IPdesign]

I had done the same thing as he says, "July."
the only escamotage I used was to have first made the fillet area with the resin so that it was held at the same time with a gas nipple, and then with patience I had inserted a very liquid resin, with a percentage of hardener to the minimum so that it was very fluid and hardened in a long time.
stop all exits, put the liquid in pressure.
the pressure pushed the liquid into the open porosity and I got an object with an 8 bar seal.
But you have to pay attention to the thicknesses when pressure rises, we are always talking about laminated and unprinted abs; a deflagration could have heavy consequences if you have any operator nearby
a client had made me make a series of samples to different thicknesses and after having treated them had made them test to a laboratory before installing them as final details.
when it had the lab results commissioned me the final supply of the thickness that guaranteed double seal to its needs and in such a way as to provide to the final company a certification of the supply.

I always like to warn about these things, because then you do it in a moment to say "but I thought" or "but I didn't know".

It seems that there is a new technology in support of our supplies, which in essence is a kind of solvent washing and allows to "lisciate" the artifact by closing the porosity.
I'm waiting to be able to test it, but as soon as I have recontrials I will post a report .
at the moment I leave you with the veil of curiosity:biggrin:

 

[gianni76]

Thank you very much for your answer. .
I can ask you to be a little more specific. I am quite ignorant about it and I have difficulty understanding what resin you use, can you give me an example of a commercial product you can buy? Thank you. .

I didn't quite grasp your production system, what do you mean when you say, "having first made the fillet area with the resin," that is, you went over it by brushing resin after printing? then you introduced resin, stopped everything, and put in pressure. Right?

 

[IPdesign]

So, I used the classic resin to lay down and repair the fiberglass, the one that is then used with its hardener, I can not give you a commercial name as it was almost 2 years ago.
my client did it alone and therefore I ignore the product.
Keep in mind that as well as glues, even for resins there is a world apart, I would never have believed there was so much variety and choice.

these days I am trying to contact a resin representative for a similar problem.

for the threaded speech. of course the thread must have pneumatic seal, if I break the thread with dense resin, I get that it does as seal after screwing the fitting.
I chose a nipplo to avoid having to remove it later, in fact to mount directly on the aps a quick attack in case of breakage or not hold of the attack throwesti also the aps because not to remove it anymore if not disintegrating the piece, so for all the threaded areas .
of course there are specific notices to avoid glues etc.
As I used an ad hoc frame to rotate the piece while it was in pressure to allow the resin to reach all points (not enough pressure ) in essence is a very complicated and laborious process and much depends on the geometry of the object not least from the density of the resin.

from my experience it has emerged that the economicity of the operation depends on faces factors, geometry, n° pieces etc .. sometimes it costs less to work a blocking plastic in fresa rather than spend 1 day to isolate one product .

 

[gianni76]

Thank you very much

So, I used the classic resin to lay down and repair the fiberglass, the one that is then used with its hardener, I can not give you a commercial name as it was almost 2 years ago.
my client did it alone and therefore I ignore the product.
Keep in mind that as well as glues, even for resins there is a world apart, I would never have believed there was so much variety and choice.

these days I am trying to contact a resin representative for a similar problem.

for the threaded speech. of course the thread must have pneumatic seal, if I break the thread with dense resin, I get that it does as seal after screwing the fitting.
I chose a nipplo to avoid having to remove it later, in fact to mount directly on the aps a quick attack in case of breakage or not hold of the attack throwesti also the aps because not to remove it anymore if not disintegrating the piece, so for all the threaded areas .
of course there are specific notices to avoid glues etc.
As I used an ad hoc frame to rotate the piece while it was in pressure to allow the resin to reach all points (not enough pressure ) in essence is a very complicated and laborious process and much depends on the geometry of the object not least from the density of the resin.

from my experience it has emerged that the economicity of the operation depends on faces factors, geometry, n° pieces etc .. sometimes it costs less to work a blocking plastic in fresa rather than spend 1 day to isolate one product .

 

[2¶ - progetti]

about the new technology to "lisciate". I was also interested in this application as the surface finish is decisive for my customers, complaining even a slicing of 0.125 (fortus)...but I was told that the current finishing system is chemical and at a cost of about 20000€ does not produce the desired results. Moreover, being purely chemical it needs environment and special manipulation measures, I was ultimately not advised. Is it true that a new mechanical/chemical technology will be presented at the next convention of stratasys... are you referring to this ip or that on the market? Does anyone have other experiences and/or information that convalidino those related?

disabilitywww.duepigreco3d.it

 

[GIULIOGE]

I had used an arexon brand epoxy resin, sold in a box with double syringe, so the dosage is automatic.
bought by a tool shop, but located in all the brico, are those products sold as bicomponent epoxy glues.
freshly prepared is very dense. That's why I stretched it with alcohol. eye that usually harden quickly.
I had one piece even small enough. if you need higher quantities of Venetian brands, c-system (http://www.cecchi.it/italiano/htm/resine.html), http://www.nautikit.com/search_result.asp?category=resine epossidiche&description=sp 106can be more practical and economical.
Jury

 

[fast3d]

the abs like of the objet does not have any of these problems as it is not a porous material and placed at high pressure even 12 bar (of course also depends on the thickness, minimum 1.5mm) without need of any type of post infiltration that is always negative as it alters the size of the detail.

good work at allhttp://www.fast3dsrl.it

 

[gianni76]

the abs like of the objet does not have any of these problems as it is not a porous material and placed at high pressure even 12 bar (of course also depends on the thickness, minimum 1.5mm) without need of any type of post infiltration that is always negative as it alters the size of the detail.

good work at allhttp://www.fast3dsrl.it

Bye. Thank you very much for your help. I visited links to your site and I see that you are from the industry so you were really a "signor2 to give me directions despite competitor of my current provider.. for this I ask you if I can contact you directly to deepen. .

 

[gianni76]

the abs like of the objet does not have any of these problems as it is not a porous material and placed at high pressure even 12 bar (of course also depends on the thickness, minimum 1.5mm) without need of any type of post infiltration that is always negative as it alters the size of the detail.

good work at allhttp://www.fast3dsrl.it

if I have not misunderstood the objet machines use other technology to produce, more expensive and slow that creates pieces much better finished but not suitable for direct use.

 

[fast3d]

Bye-bye

I'd say you got it wrong.
today I want to be a little polemic since it is the last day and then there are the holidays (for us at least)

Abs like also has very significant functional characters. I noticed that almost everyone in this forum are pro fdm and against objet (this was the controversy) even if we should be colleagues as fdm and objet will merge into a big society as already mentioned by others rightly.

My site you saw it, so if you want to deepen, I'm available

stefano salts

 

[gianni76]

Bye-bye

I'd say you got it wrong.
today I want to be a little polemic since it is the last day and then there are the holidays (for us at least)

Abs like also has very significant functional characters. I noticed that almost everyone in this forum are pro fdm and against objet (this was the controversy) even if we should be colleagues as fdm and objet will merge into a big society as already mentioned by others rightly.

My site you saw it, so if you want to deepen, I'm available

stefano salts

hi, sorry I didn't want to create "dogs" I reported what I felt like I understood by talking to the various dealers of these different technologies.
I am absolutely not against anyone.. I normally print the pieces to third parties so I have no direct interests.. indeed if there is a similar or better solution why not try. .

Hi.

 

[3DZ]

Bye-bye.
if you're interested, even to understand more, we offer a different technology that we have already tested by customers both for liquid sealing and pressure up to 10 bar.

If you think you might be interested, do not hesitate to contact me.

Good day

 

[gianni76]

Bye-bye.
if you're interested, even to understand more, we offer a different technology that we have already tested by customers both for liquid sealing and pressure up to 10 bar.

If you think you might be interested, do not hesitate to contact me.

Good day

hello, yes I am interested in proving different solutions and hope more economical. . explain to me what technology you use.. and where I can find info x materials and its mechanical characteristics. .

Thank you. .

 

[3DZ]

Good morning.
If you leave me an email I'll send you some information and even my contact details.
what product do you do exactly?

 

[IPdesign]

and why not post on this forum?
open a new tread and illustrate your technology
a forum is made of knowledge and comparison.

 

[3DZ]

are a dealer for 3dsystems and in September we will start with a reality on brescia. I thought it wasn't a pleasure for a business that was unfairly commercial :

 

[IPdesign]

the goal is to bring to the knowledge of your techniques, a dissemination of information that can also have a comparison and stimulate dialogue.
Of course it must not be a television commercial