[ELECTRON] Proposed new club + Arduino meet up

Sat Nov 12 19:30:33 UTC 2011

I was thinking it might be good to post our discussion here on the website.
I don't know if there is software to do it, does anyone know what the
generic name of such software might be called?

Thanks

Kieran

On 12 November 2011 19:11, Kieran Wyse <kieranwyse at gmail.com> wrote:

>
> If no one has them lying around  I picked up form b & Q, they seem to be
> the cheapest.
>
>
>
> http://www.diy.com/diy/jsp/bq/nav.jsp?action=detail&fh_secondid=9283910&fh_location=//catalog01/en_GB/categories%3C{9372015}/categories%3C{9372044}/categories%3C{9372215}/specificationsProductType=threaded_rods<http://www.diy.com/diy/jsp/bq/nav.jsp?action=detail&fh_secondid=9283910&fh_location=//catalog01/en_GB/categories%3C%7B9372015%7D/categories%3C%7B9372044%7D/categories%3C%7B9372215%7D/specificationsProductType=threaded_rods>(I take it these are M8)
>
>
> If anyone has something to cut them with that would be great. I am not
> sure the cca would approve of me using an angle grinder. Otherwise they
> will have to wait to be cut at the next meeting.
>
> Kieran
>
>
>
>
> On 11 November 2011 21:12, Blair Thompson <mail at justblair.co.uk> wrote:
>
>> I will look forward to seeing what you get done.
>>
>> I have now completed a few of the smaller plastic parts.  I was planning
>> to
>> tackle the vertexes next  (that is if no one has started them yet?).  One
>> because they are less complex parts (and I am still honing my printing
>> skills) and two because it would mean that we were only the 8mm rods away
>> from getting something started build wise.
>>
>> http://goshg.org.uk/index.php/reprap  you can see on the link that we
>> have
>> gathered quite a few of the components and others are on order.
>>
>> I know in the meeting a few people mentioned they may have threaded rod.
>> Can everyone have a look and see if the can update the BOM with what they
>> have?
>>
>> Blair
>>
>> -----Original Message-----
>> From: members-bounces at electronclub.org
>> [mailto:members-bounces at electronclub.org] On Behalf Of Thomas Parry
>> Sent: 10 November 2011 16:27
>> To: Discussion list for the Electron Club
>> Subject: Re: [ELECTRON] Proposed new club + Arduino meet up
>>
>> Ramps does have a natural advantage that one of us is familiar with it and
>> it seems like a well respected choice so I'll just go ahead with them.
>>
>> The more surface mount components the better from my perspective as it
>> make
>> the board production easier, less holes to drill, and the components are
>> usually cheaper.
>>
>> I will keep you guys updated with my progress and will hopefully have
>> something to bring to the meeting next week.
>>
>> Tom
>>
>> On Wed, Nov 9, 2011 at 10:36 PM, Blair Thompson <mail at justblair.co.uk
>> >wrote:
>>
>> > Hi Tom
>> >
>> > I can't say that I am totally a ramps fanboy.  I favour it for a
>> > couple of reasons though...
>> >
>> > 1.  I know it (yep that is the main reason) 2.  SD support 3.  Good
>> > support from the firmware point of view.  (ie Marlin, Sprinter,
>> > etc.)
>> >
>> > There are others though and some may be easier to manufacture.
>> >  Sanguinololu
>> > I believe can be made to operate from SD.  I would have to check to
>> > see what firmwares it can support.
>> >
>> > As for ramps 1.4  If you enjoy working on surface mount stuff this is
>> > one route to go.  Ramps 1.3 is through hole and has as far as I can
>> > tell all the relevant features...
>> >
>> >
>> > -----Original Message-----
>> > From: members-bounces at electronclub.org
>> > [mailto:members-bounces at electronclub.org] On Behalf Of Thomas Parry
>> > Sent: 09 November 2011 20:26
>> > To: Discussion list for the Electron Club
>> > Subject: Re: [ELECTRON] Proposed new club + Arduino meet up
>> >
>> > Looking at the options for the electronics, I'm not really sure what
>> > path to go down.  Blair, I know you're a fan of the RAMPS boards, what
>> > about if I make a RAMPS 1.4 board? What are peoples opinions on the
>> > best board for me to go ahead and make?
>> >
>> > Tom
>> >
>> > On Tue, Nov 8, 2011 at 10:48 PM, Blair Thompson <mail at justblair.co.uk
>> > >wrote:
>> >
>> > > As I said in my ps.  I have just received a bundle of nuts and
>> > > bolts, which should cover the needs in that department.  I have
>> > > marked them as on order on the RepRap page at goshg.  I should
>> > > change that to yes when I get a chance.
>> > >
>> > > I have also been working on some ABS prints for the printer as well.
>> > > I am still refining the hole sizes for the bar clamps.  What I have
>> > > made so far is probably useable, but I would be happier if I can get
>> > > the tolerances down a little before attempting more critical prints.
>> > >
>> > > I have been using parts from Greg Frost's repository for this as he
>> > > has a more robust looking Y bracket.  I will probably use one of the
>> > > close but no cigar prints to upgrade my own printer.
>> > >
>> > > As for changing nozzles on the fly?  The hot end is bolted into the
>> > > extruder (if using a Wades which is the current fashion) with two
>> > > 3mm bolts.
>> > > Changing the nozzles over is probably going to damage the hot end if
>> > > done frequently, but changing hot ends is certainly possible if
>> > > fiddly.  If it were me I would be tempted to carry two
>> > > extruder/x-carriage/extruder motor/hot-end combos for an easy swap
>> > > over.  Use a durable connector to make the electronics easy to swap
>> > > and Bob is indeed your mammies sister's ball and chain.
>> > >
>> > > For what we are hoping to do, sticking with the standard sizes would
>> > > make calibration that bit easier especially if we use the
>> > > Pronterface/Sfact/marlin firmware options.  You can get pretty good
>> > prints
>> > > after a pretty simple calibration routine.   It's only when you are
>> > trying
>> > > to make mechanical parts that you need more precision.
>> > >
>> > > Blair
>> > >
>> > > -----Original Message-----
>> > > From: members-bounces at electronclub.org
>> > > [mailto:members-bounces at electronclub.org] On Behalf Of Kieran Wyse
>> > > Sent: 08 November 2011 22:29
>> > > To: Discussion list for the Electron Club
>> > > Subject: Re: [ELECTRON] Proposed new club + Arduino meet up
>> > >
>> > > Once the reprap is built we can certainly thing about enclosing it,
>> > > it may well improve build quality. As to the fidelity it does seem
>> > > just from visual inspection of the parts printed that the limiting
>> > > factor seems to be the size of the nozzle. Which begs the question
>> > > is there are any way to change the nozzle size on the fly? If it
>> > > were possible and I do not know how I think it would likely turn the
>> > > reprap into a VERY capable machine.
>> > >
>> > > I have been told that the motors are going to take another 11 days
>> > > to arrive. They should be here by the end of the month i reckon. Has
>> > > anyone else had more progress than myself?
>> > >
>> > > Kieran.
>> > >
>> > > On 8 November 2011 21:56, Blair Thompson <mail at justblair.co.uk>
>> wrote:
>> > >
>> > > > I have seen other reprap experimenters talking about using
>> enclosures.
>> > > > I for the life of me cant remember whom.  What I do seem to recall
>> > > > was that they were using the heated bed as the main heating source
>> > > > for the enclosure and then using a temperature controlled fan to
>> > > > maintain the ambient temperature inside the case.  I seem to
>> > > > remember a temperature of around 40c as being in the ballpark as
>> > > > to
>> > what
>> > was useful.
>> > > >
>> > > > If I remember quickly, what the experimenters were trying to
>> > > > achieve was reduction of distortion in taller models.  Warping
>> > > > occurs sometimes when parts of the model at the base cool while
>> > > > those at the top i.e. the most recently printed are stil hot.  An
>> > > > enclosure serves to reduce the difference in temperature from the
>> > > > most recently printed parts of the model to the least recently
>> printed.
>> > > >
>> > > > I have been trying to perfect my machine and have found that fan
>> > > > cooling of the filament as it is laid down makes a difference to
>> > > > the quality of the prints in either ABS and PLA.  For ABS however
>> > > > I also have to lay a skirt which reduces the cooling at the bottom
>> > > > of the model from either my cooling fan or from the movement of the
>> Y
>> axis.
>> > > > I was getting lifts from the build plate before I started using
>> > > > the skirt.  I don't know if this will improve PLA prints as I have
>> > > > not tried it yet, Imanaged to get good prints without it.
>> > > >
>> > > > The layer thickness you reference for the Reprap of 0.3mm depends
>> > > > on the extrusion nozzle aperture width.  With a 0.5mm width and
>> > > > 3mm filament the layer thickness works out at about 0.4mm using
>> > > > the sfact software as a slicer.  You can get lower by using
>> > > > different filament thickness and different nozzle aperture widths.
>> > > > What you gain in fidelity you lose in build speeds though.
>> > > >
>> > > > One idea I had was to not build the reprap using triangular
>> > > > vertexes, but rather to build an MDF cube but use the Prusa
>> > > > dimensions and mechanical parts.  This would certainly allow
>> > > > experimentation in terms of retaining some ambient heat around the
>> > models being created.
>> > > >
>> > > > Regards
>> > > >
>> > > > Blair.
>> > > >
>> > > > Ps  I just got a delivery of various screws and bolts that I needed.
>> > > > I of course ordered a few extras.  All but the M8 washers arrived
>> > today.
>> > > >
>> > > >
>> > > >
>> > > > -----Original Message-----
>> > > > From: members-bounces at electronclub.org
>> > > > [mailto:members-bounces at electronclub.org] On Behalf Of Brian
>> > > > Loudon
>> > > > Sent: 08 November 2011 21:29
>> > > > To: Discussion list for the Electron Club
>> > > > Subject: Re: [ELECTRON] Proposed new club + Arduino meet up
>> > > >
>> > > > Hi to those interested in RepRaps, I came across this patent
>> > > > relating to temperature and flow control for professional Fused
>> > > > Deposition Modelling systems ;
>> > > >
>> > > >
>> > > > http://www.google.co.uk/patents?hl=en&lr=&vid=USPAT5866058&id=OgUX
>> > > > AA
>> > > > AA
>> > > > EBAJ&o
>> > > >
>> > > > i=fnd&dq=stratasys+patent+fused+deposition+modelling&printsec=abst
>> > > > ra
>> > > > ct
>> > > > #v=one
>> > > > page&q&f=false<http://www.google.co.uk/patents?hl=en&lr=&vid=USPAT
>> > > > 58
>> > > > 66
>> > > > 058&id=OgUXAAAAEBAJ&o%0Ai=fnd&dq=stratasys+patent+fused+deposition
>> > > > +m od elling&printsec=abstract#v=one%0Apage&q&f=false>
>> > > >
>> > > > The stratasys Dimension printers achieve .178 mm, .254 mm or .33
>> > > > mm layer thicknesses,
>> > > >
>> > > > http://www.dimensionprinting.com/3d-printers/3d-printing-compariso
>> > > > n_
>> > > > ch
>> > > > art.as
>> > > > px
>> > > >
>> > > > the reprap is quoted as a layer thickness of 0.3
>> > > > http://reprap.org/wiki/Mendel
>> > > >
>> > > > The patent above emphasises the importance of temperature and the
>> > > > professional machines all have enclosures, makes me wonder if the
>> > > > reprap performance can be optimized?
>> > > >
>> > > > cheers
>> > > >
>> > > > Brian
>> > > >
>> > > >
>> > > >
>> > > > _______________________________________________
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