[GreenKeys] Model 33 printer heads

Fri Mar 27 18:06:23 EDT 2020

I would propose checking with a machinist for a quote. There are cnc
configurations that are used to do rotational engraving that may be perfect
for this. 4 axis vs 5 axis machining are also very different in price up
front and per unit.

As far as casting goes, finding someone to quote an exact casting in jb
weld or a similar material will be exceedingly challenging. Most other
materials can not handle the force of the repeated hammer strikes.

The other option is to use the flat shape on thingiverse and machine it
with a standard 3 axis cnc machine, then create a cylinder by welding the
ends together around a machined cylinder of solid steel. You would likely
need to heat the band and cool the cylinder to get a precise fit, but a
process like that was likely what teletype did based on my observations.

-Eric

On Fri, Mar 27, 2020, 16:43 <tomas at tlec.se> wrote:

> 4 or 5 axis does not matter, the problem is the resolution, as I see it,
> it is probably cheaper to print them, next is casting and third is
> machining.
>
>
>
> Mvh
>
> Tomas Larsson
>
> Sweden
>
>
>
> *Från:* Eric Moore <mooreericnyc at gmail.com>
> *Skickat:* den 27 mars 2020 22:35
> *Till:* tomas at tlec.se
> *Kopia:* Greenkeys <greenkeys at mailman.qth.net>
> *Ämne:* Re: [GreenKeys] Model 33 printer heads
>
>
>
> Yes, and perhaps unnecessary as a 4 axis machine would likely do the trick.
>
>
>
>
>
> On Fri, Mar 27, 2020, 16:29 <tomas at tlec.se> wrote:
>
> I will certainly come back with more information.
>
> Machining them with a 5-D router would probably be very expensive, if one
> wants to meet the resolution on the existing heads, most likely radious of
> less than 0,1 mm or so.
>
>
>
> Mvh
>
> Tomas Larsson
>
> Sweden
>
>
>
> *Från:* Eric Moore <mooreericnyc at gmail.com>
> *Skickat:* den 27 mars 2020 22:20
> *Till:* tomas at tlec.se
> *Kopia:* Greenkeys <greenkeys at mailman.qth.net>
> *Ämne:* Re: [GreenKeys] Model 33 printer heads
>
>
>
> Awesome, a high resolution steel 3d printing process may be less expensive
> then having them machined.
>
>
>
> I hope it turns out well, and if you have any details on the process he is
> using and the resolution he can achieve I would be interested in the
> details.
>
>
>
> -Eric
>
>
>
>
>
> On Fri, Mar 27, 2020, 16:00 <tomas at tlec.se> wrote:
>
> According to my contact, it should not be a problem printing these in
> steel, however, solid steel might be to heavy for the printing mechanism,
> so I will have to modify the model, in order to make it lighter, to at
> least the same weight as the original head.
>
>
>
> Mvh
>
> Tomas Larsson
>
> Sweden
>
>
>
> *Från:* Eric Moore <mooreericnyc at gmail.com>
> *Skickat:* den 27 mars 2020 21:45
> *Till:* tomas at tlec.se
> *Kopia:* Greenkeys <greenkeys at mailman.qth.net>
> *Ämne:* Re: [GreenKeys] Model 33 printer heads
>
>
>
> In steel a machining process would likely produce the best results
> according to my friend.
>
>
>
> https://www.cnccookbook.com/4-axis-cnc-in-2020-the-definitive-guide/
>
>
>
> Though I have no idea what crazy 3d printing tech exists nowadays.
>
>
>
> There are companies that could be engaged for quotes. At minimum it should
> be compared in terms of cost/resolution/strength. I could not find a vendor
> with a high enough resolution in steel myself.
>
>
>
> -Eric
>
>
>
> On Fri, Mar 27, 2020, 15:31 <tomas at tlec.se> wrote:
>
> Yes it did, and thats why I reacted
>
> Quote
>
> A couple of wheels are available for museums or educators who need them.
> Please contact me directly off list. These are direct casts from original
> wheels and do not contain the signature present in the 3d models.
>
>
>
> No further details on the process will be provided, as it required a lot
> of advanced technique and my friend is not interested in writing a long
> detailed guide as would be required
>
> End quote
>
> My intention is to make them available to everyone at basicaly self cost
> price, I do not intend to make any money on this. However, if I am going to
> order more than that is sold, then I have to make profit.
>
>
>
>
>
> Mvh
>
> Tomas Larsson
>
> Sweden
>
>
>
> *Från:* Paul Heller <paul0926 at comcast.net>
> *Skickat:* den 27 mars 2020 21:17
> *Till:* Eric Moore <mooreericnyc at gmail.com>
> *Kopia:* tomas at tlec.se; Greenkeys <greenkeys at mailman.qth.net>
> *Ämne:* Re: [GreenKeys] Model 33 printer heads
>
>
>
> Your first post did make it out to the group. I saw it
>
> Paul
> W2TTY
>
> ITTY:
> HTTP://INTERNET-TTY.NET:8000/ITTY <http://internet-tty.net:8000/ITTY>
> ITTY100:            HTTP://INTERNET-TTY.NET:8010/ITTY100
> <http://internet-tty.net:8040/EUROPE>
>
> AUTOSTART: HTTP://INTERNET-TTY.NET:8030/AUTOSTART
> <http://internet-tty.net:8030/AUTOSTART>
> EUROPE:           HTTP://INTERNET-TTY.NET:8040/EUROPE
> <http://internet-tty.net:8040/EUROPE>
>
>
>
> On Mar 27, 2020, at 2:15 PM, Eric Moore <mooreericnyc at gmail.com> wrote:
>
> 
>
> Hello, I tried to send the message below to the list a couple of days ago
> but it didn't go through. Here it is again.
>
>
>
> Hello, I am writing to let you all know that my friend made a 3d model of
> an asr 33 type wheel.
>
>
>
> https://www.thingiverse.com/thing:4159598
>
>
>
>  He used this to 3d print a high resolution model, and then created a mold
> from that print, cast a new wheel in jb weld, and that wheel was tested in
> an ASR 33 and it worked. The model is provided for anyone who wants to
> attempt casting a new wheel in jbweld or to use any other manufacturing
> process they think may work.
>
>
>
> A couple of wheels are available for museums or educators who need them.
> Please contact me directly off list. These are direct casts from original
> wheels and do not contain the signature present in the 3d models.
>
>
>
> No further details on the process will be provided, as it required a lot
> of advanced technique and my friend is not interested in writing a long
> detailed guide as would be required.
>
>
>
> This model also allows for people to create new wheels with custom fonts,
> have fun!
>
>
>
>
>
> On Fri, Mar 27, 2020, 14:21 <tomas at tlec.se> wrote:
>
> Well, I got the idea from that post, however, as i understood it, they
> used the 3D-print to make a cast,  subsequently casting in epoxy.
>
> And I am using the stl-file from Thingiverse.
>
>
>
>
>
> Mvh
>
> Tomas Larsson
>
> Sweden
>
>
>
> *Från:* Jeffrey Golas <jeffg at junknet.net>
> *Skickat:* den 27 mars 2020 19:39
> *Till:* tomas at tlec.se
> *Kopia:* greenkeys at mailman.qth.net
> *Ämne:* Re: [GreenKeys] Model 33 printer heads
>
>
>
> There is someone working on exactly this, if you search Thingiverse they
> have a test model there.
>
>
>
> Jeff
>
>
>
> On Mar 27, 2020, at 1:32 PM, tomas at tlec.se wrote:
>
> 
>
> Dear folks.
>
> I am looking into, having a printerhead to my Model 33 3D-printed i steel,
> is there any interest to have some more printed out.
>
> The guy I am talking to says that it should be doable to 3D-print it,
> obviously it means that one can have any type of Head, with any
> characterset made in this way.
>
> Currently I have no Idea what the cost would be, but wil have an
> indication of price in the near future.
>
>
>
> Mvh
>
> Tomas Larsson
>
> Sweden
>
>
>
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