[ELECTRON] Proposed new club + Arduino meet up

Sat Nov 12 19:43:41 UTC 2011

Great sounds like a plan.

I see your wild Saturday night have come to an end as well. We have post
man pat on the TV

Kieran.

On 12 November 2011 19:17, Blair Thompson <mail at justblair.co.uk> wrote:

> I have a handsaw that has a metal cutting blade on it.  Makes pretty quick
> work of steel
>
> Blair
>
> -----Original Message-----
> From: members-bounces at electronclub.org
> [mailto:members-bounces at electronclub.org] On Behalf Of Kieran Wyse
> Sent: 12 November 2011 19:12
> To: Discussion list for the Electron Club
> Subject: Re: [ELECTRON] Proposed new club + Arduino meet up
>
> 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_l
>
> ocation=//catalog01/en_GB/categories%3C{9372015}/categories%3C{9372044}/cate
> gories%3C{9372215}/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=Og
> > > > > UX
> > > > > AA
> > > > > AA
> > > > > EBAJ&o
> > > > >
> > > > > i=fnd&dq=stratasys+patent+fused+deposition+modelling&printsec=ab
> > > > > st
> > > > > ra
> > > > > ct
> > > > > #v=one
> > > > > page&q&f=false<http://www.google.co.uk/patents?hl=en&lr=&vid=USP
> > > > > AT
> > > > > 58
> > > > > 66
> > > > > 058&id=OgUXAAAAEBAJ&o%0Ai=fnd&dq=stratasys+patent+fused+depositi
> > > > > on
> > > > > +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-compari
> > > > > so
> > > > > 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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