[OpenTRV-dev] Mass box printing

[Philip Canavan]

If it's that order of cost then is it worthwhile looking into injection? I believe there are some low-volume shops designed for prototyping; 100-off would presumably be a viable (or even large) order for them. Anyone know where the tipping point is likely to be? I'm assuming the current solid models can be re-used.




>________________________________
> From: Damon Hart-Davis <EMAIL ADDRESS HIDDEN>
>To: Closed list for developer discussions <EMAIL ADDRESS HIDDEN> 
>Sent: Wednesday, 27 November 2013, 9:18
>Subject: Re: [OpenTRV-dev] Mass box printing
> 
>
>I do 0.3mm layers; 2h is about right.  Which is why I don’t want to tie your life up on mass production.
>
>Rgds
>
>Damon
>
>
>On 27 Nov 2013, at 08:56, Bo Herrmannsen <EMAIL ADDRESS HIDDEN> wrote:
>
>> Pronterface says:
>> 
>> 4631.27473342 mm of filament used in this print
>> 
>> that is for all 4 layers in one go at best resolution the printer can (0.1mm layer hight) print time is an insane 6 hours... at 0.2 mm it would be half... and at 0.3mm it would be 2 hours
>> 
>> 
>> Den 27/11/2013 kl. 08.41 skrev Stuart Poulton:
>> 
>>> "Most service bureaux charge per unit volume of material used in the building of the model, and not the total volume. We like to do it a little different…. we charge for the total swept volume of the part, but at about a tenth of the cost of the going rate!"
>>> 
>>> Which seems like a fair way to do it.
>>> 
>>> On 27/11/13 07:39, Bo Herrmannsen wrote:
>>>> 90cm3 seems like a lot... does that assume its hollow?
>>>> 
>>>> /bo
>>>> 
>>>> Den 27/11/2013 kl. 08.36 skrev Stuart Poulton:
>>>> 
>>>>> Ok, taking the URL below, and making the following assumptions
>>>>> 
>>>>> OpenTRV box is ~ 5.5cm x 5.5cm x 3cm
>>>>> 
>>>>> This gives a swept volume of 90.75 cm3, at 10pence per cm3, total price is £9.75 + VAT
>>>>> 
>>>>> I appreciate that 3d printing is great, but for that sort of price I can get a nice case that looks like this
>>>>> 
>>>>> https://dl.dropboxusercontent.com/u/6014682/IMG_0434.JPG
>>>>> 
>>>>> 
>>>>> Stuart
>>>>> 
>>>>> 
>>>>> On 26/11/13 21:26, Bruno Girin wrote:
>>>>>> I got some prints done by those guys before I had a 3D printer: http://www.3dprint-uk.co.uk/
>>>>>> 
>>>>>> They are based in Brick Lane and the prints are of very good quality. The only downside is that they do any colour as long as it's white.
>>>>>> 
>>>>>> 
>>>>>> On 26 November 2013 17:03, Damon Hart-Davis <EMAIL ADDRESS HIDDEN <mailto:EMAIL ADDRESS HIDDEN>> wrote:
>>>>>> 
>>>>>>    Hi,
>>>>>> 
>>>>>>    I would like to have a small number of the current OpenTRV box
>>>>>>    design printed by (say) 2 different organisations in preparation
>>>>>>    for printing up 40 or more very soon for the trial, to find out
>>>>>>    who is reliable and produces good prints and is easy to deal with.
>>>>>> 
>>>>>>    Would you like to suggest one or more to test out in this way?
>>>>>>     Might be commercial or not (eg TVRRUG).
>>>>>> 
>>>>>>    Rgds
>>>>>> 
>>>>>>    Damon
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> -- 
>>>>>> Bruno
>>>>>> Visit my weblog: http://brunogirin.blogspot.com
>>>>>> 
>>>>>> 
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