Re: [CAD_CAM_EDM_DRO] REPRAP COST EFFECTIVE?

The newer 'bot design like the Ultimaker is MUCH faster and more
consistent and reliable than the original Makerbot design.

However, it's only appropriate for small volume. It may only take 30
min or even 10 minutes but that's still far too long to spend on a
spacer in a commercial environment. An automated build platform does,
in theory, allow you to set it and walk away, but someone still has to
be responsible for operating it and it'll only churn out a handful in a day.

If it's a 2D part, just laser cut it.

Danny

On 10/9/2011 12:16 PM, Jon Elson wrote:
> 556RECON wrote:
>> I love gadgets and stuff like this machine. and I want one. but I have
>> to know how much I would use it an if it would be cost effective.
>>
>> An example: A part I make for a company is a spacer. It is 0.500"
>> thick, 1.625" by 2.500". there is 1.125" hole centered on the piece and
>> 2 0.1875" holes one on each end. They cannot be wood or metal so that
>> means plastic.
>>
>> Can any one give me an idea of what the cost of materials and time to
>> make the parts.
>>
> This is not a logical part for a filament fabricator. They are best on
> thin parts
> that are like shells or boxes, ie. lots of exterior but mostly hollow.
> The typical
> makerbot sort of machine might take 2 HOURS to make one of these parts.
> Also, in most cases these machines cannot make precise parts due to
> shrinkage,
> and the parts are nowhere near solid. They are made of layers of thin
> plastic
> filament laid down layer by layer, but have air spaces between the strands.
> If you can imagine building something by squeezing toothpaste out of a tube
> and building up a structure, that's what it looks like, only on a much
> smaller scale.
>
> Cost of the material is not zero, but it is not real high, either. Most
> people use PLA
> or ABS for these machines. They are quite conservative with material,
> there is a little
> wastage in some cases to make a "foot" for the part on the build table,
> but otherwise
> all the material ends up in the part. I would doubt your part would use
> more than
> $2 - 4 of material. That is still probably a lot more than the cost of
> Nylon or Delrin
> in bars. But, the real difference is in time. I imagine you could make
> these
> parts in production on a mill in a couple minutes each, especially with some
> fixtures to hold several in a row.
>
> Jon
>
>
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