plastic object production

[cecchisandrone]

Hello everyone,

for a project I'm making, I need to produce a plastic casing for an object containing electronic devices like what you see in the photo.basically it's a box with a cashed tablet and kittens. the object measures about 60x60x20 cm.
I tried to make quotes for 3d fdm print and cost about 400 euros. I have tried to contact companies that print plastics but I would like to better understand how to direct my request, since most of the time I am not fully understood.
I would like to initially produce a dozen of these items to test the product on the market and then possibly make productions in more numerous volumes.
can you advise me what kind of production process to choose to not spend a fortune? Do you have any sites or contacts to report to me?
Thank you very much for your help.

 

[reggio]

hi, try with thermoforming, we make hollow hollows dim 425x200h=140mm sp3/4mm: the wooden mold cost us 3/400€ and every piece € 18/20 (we make it 100pz per time) every 3/4 years call us to remake the wooden mold...
it could be a solution for the box, for the sportsmen you have to feel if they manage to make them in a single block (the ns originally is closed on and without holes that then practice with a robot with cutter), I don't say that with €400 do everything, but you shouldn't even reach the €400x10....

Good luck!

 

[cecchisandrone]

thanks for the info. for the moment we have changed slightly the initial project and we are making it in plexiglas + wood on 60 euros per sample.

 

[Ing.Cecco]

Hi.
another solution if you want to make the plastic piece, is to rely on the new hp multijet fusion printer. For the company where I work we have created a sampling of fans for domestic boilers, of about 60pz at a very advantageous cost.

at the following link you can see the technology and company that proposes this service to which I personally addressed myself: http://www.comelec.it/stampaggio-senza-stampo/I hope I helped you.
Bye.

 

[reggio]

Hi.
another solution if you want to make the plastic piece, is to rely on the new hp multijet fusion printer. For the company where I work we have created a sampling of fans for domestic boilers, of about 60pz at a very advantageous cost.

at the following link you can see the technology and company that proposes this service to which I personally addressed myself: http://www.comelec.it/stampaggio-senza-stampo/I hope I helped you.
Bye.

hi, I imagine anyone who might be interested in 3d printing, except then realize that in different cases, costs, finishes and times reserve surprises...

the example above is sock:
cecchisandrone had departed from 400x10=4000€
I have suggested a total approach from 800/1000€
at the end he thought to change again and spend €60x10 = 600€

with your "system" you would be able to estimate, so only for the pleasure of comparing spice, how much would it cost or how much did you spend for your impellers (indicatively done as?)?

See you soon!

 

[Ing.Cecco]

hi, I imagine anyone who might be interested in 3d printing, except then realize that in different cases, costs, finishes and times reserve surprises...

the example above is sock:
cecchisandrone had departed from 400x10=4000€
I have suggested a total approach from 800/1000€
at the end he thought to change again and spend €60x10 = 600€

with your "system" you would be able to estimate, so only for the pleasure of comparing spice, how much would it cost or how much did you spend for your impellers (indicatively done as?)?

See you soon!

I was informed and misrepresented: It was not about impellers, but of electronic card protections. Then we speak in an object often a couple of millimeters, diameter about 12cm and high 8cm.
the sampling was about 60pz and it cost 12€/pz with pa12 material loaded.
the dimensions compared to the object to which it refers @cecchisandrone They are very different, but I do not expect astronomical figures, certainly not 400€.

Try not to harm. a quote I would ask.

Bye.

 

[Meteor02]

It's a nice bitch, thermoforming cut and paste the inks probably takes you out of budget and you also miss the numbers. 3d printing is expensive and to be presentable should be smoothed and painted. injection molding has a high initial investment and requires far greater numbers, at least a lot of 1000 pcs per year but provides you with a particular "finished" at an irrisorial cost. Surely if you have to spend 4000 euros it is worth taking into consideration an injection economic mold.

 

[reggio]

It's a nice bitch, having already established the final price I don't see a great chance, thermoforming cut and paste the inks probably takes you out budget and you miss the numbers too. 3d printing is expensive and to be presentable should be smoothed and painted. injection molding has a high initial investment and requires far greater numbers, at least a lot of 1000 pcs per year but provides you with a particular "finished" at an irrisorial cost. Surely if you have to spend 4000 euros it is worth taking into consideration an injection economic mold.

( Forgive us if we are slipping towards the oct over 3d printing, but it's all so interesting ...)
hello meteor02, really with a budget of €4000 could think of making an economic injection mold for the size it indicated, mount it in the car and get you pull out 10pz? :
which material could you inject with a similar mold? :

 

[Meteor02]

without the mathematicians is a bit complicated but if the nn mold requires nn carts has special finishes etc etc etc. made of aluminum I would say between 6 and 9000 to check for the sportellini. the first pieces jump out with the mold test, after you will hardly be able to find who makes you lots below 250/300 pcs. that will likely have a price around 6/8 euro cad assuming a detail from 800/1000 gr in abs. with an aluminum mold you can print virtually all materials, keeping in mind that materials requiring high or charged pressure require greater maintenance.

 

[welcome to the machine]

I would just like to understand if I understood: with 6-9000 € an injection mold is made (including design? for 3d printing send him a step or an iges and if they see it, for an injection mold I don't think that only the math of the finished object is enough). therefore we assume an average value of 7500 €. with this mold it is likely to find who produces 250-300 pcs to 6-8 € cad, therefore, using average values, less than 2000 € of total value. adding the impact of the mold we would have an average cost of about 34 € per piece. Do I understand? I do not want to question what meteor02 says, indeed I would be happy if it were true, because today I spend a few tens of thousands of € every year for 3d prints and I would be delighted to reduce these costs, but it seems difficult to find who sets himself in motion to produce 2000 € of value, including the cost of the material. . .
However I agree that 3d printing deserves to be used only for pieces that would really be complex to achieve with other technologies. for relatively simple pieces, a cost comparison between current 3d technologies and classic manufacturing with machine tools still finds no foundation. We expect to see what happens in the next few years, because I hope to be denied, indeed I'm almost sure... : )

 

[TECNOMODEL]

I do not see why a company should not make a mold in the face of a limited production.
the mold pays it, so even if, in the worst case, I decided not to make the production the company in question would not put anything back to us.
of course in the mold cost is understood the design, you send it the file of the finished piece and who realizes the mold takes care of everything.
Given the figures you spend every year, I'd think about it.
I would also consider the type of pieces you go to realize.
if the type and size are similar you may also think of making an interchangeable insert mold to use several times over time.
the initial cost is more sustained, but then you just have to make a new dowel to be inserted in the mold to have a reliable prototype and at a much lower cost.

 

[Meteor02]

[

I would just like to understand if I understood: with 6-9000 € an injection mold is made (including design? for 3d printing send him a step or an iges and if they see it, for an injection mold I don't think that only the math of the finished object is enough). therefore we assume an average value of 7500 €. with this mold it is likely to find who produces 250-300 pcs to 6-8 € cad, therefore, using average values, less than 2000 € of total value. adding the impact of the mold we would have an average cost of about 34 € per piece. Do I understand? I do not want to question what meteor02 says, indeed I would be happy if it were true, because today I spend a few tens of thousands of € every year for 3d prints and I would be delighted to reduce these costs, but it seems difficult to find who sets himself in motion to produce 2000 € of value, including the cost of the material. . .
However I agree that 3d printing deserves to be used only for pieces that would really be complex to achieve with other technologies. for relatively simple pieces, a cost comparison between current 3d technologies and classic manufacturing with machine tools still finds no foundation. We expect to see what happens in the next few years, because I hope to be denied, indeed I'm almost sure... : )

each mold is a story itself this is a rectangular box made by hand made of wood and plexiglas, if made in open and close (without movements) is a basic mold project which affects in this case are the hours of milling the aluminum block and the surface finish, obvious if one wants the polished mold in mirror and out 5000 euros spends them polishing. with regard to the maths if those who design the particular has a good technical base will make a printable project reducing the costs of design mold (as for 3d printing there are guidelines for design).
my advice is to contact a competent company that will indicate the best solution according to the product and production needs (it seems strange but always an economic mold is the cheapest solution)

 

[welcome to the machine]

Okay technomodel, I didn't make myself understand, sorry. I also don't see why a moldist shouldn't make you a mold even if you want to use it as an overcoat. I doubt, however, but if you tell me that it is not so I certainly accept what you suggest, that the printer commits a press for a job of 2000 € of embroidery, raw material included.
However it is a theme that I will try to explore, because until today, apart from some aluminum casting that is well other, I have never made injection molding pieces. I have some experience of vacuum thermoforming and extrusion/wiring for hollow bodies, but molding I understand little or nothing, so I care to deepen. For example, interchangeable insert molds don't know that I'm... can try to imagine it, but I don't know its versatility.
the pieces that we print today in 3d - indeed we print in 3d, because we do not have printers in the company - are of many different types, rarely with series that exceed 50-100 pieces. I think it's a little difficult to handle them with other technologies if not, in fact, with 3d printing. However if I can make them with cnc machines for 2 axes and a half (2 in interpolation the third indexed) I definitely choose the machine tools, but when they start to be a bit strange surfaces and/or, worse still, internal channeling or emptying of complex lightening, I found convenient 3d printing, even for metal details.
but I think I'm going out of the subject because the checchisandrone friend asked much more and what I do print I don't think the interests very much... .

 

[haga78]

for the production of small series (10-15 pcs) there are prototyping companies that make replicas through silicone molds (at least 10 years ago it was so).
Basically, the model was made in stereolitography, then it was placed in the center in a container in which the silicone was then poured (+ catalyst), once solidified the silicone block was cut according to the deformed plane and the stereolitography prototype was removed (reusable for molds in the future).
the mold made of silicone was used to make pieces by vacuum casting (in a special machine), with materials loaded that had characteristics similar to the abs.
after making a number of pieces though (10-15) the mold began to ruin, but it could be remade using the prototype done initially.

If you want, I can send you the company that did this.