Search:

This article appears to show a shopbot being used to help rebuild Afghnaistan.
http://blog.wired.com/defense/2009/01/stability-opera.html

Danny,
What are the dimensions of the box.
If you are doing a limited run, you might consider doing Stereolithography (aka rapid prototyping). For limited runs, you can avoid the steep initial...

The PVC works great.
I used a sheet of AZEK.

Brian

The major issue depending on CAM software and strategy you are using would be on flat areas vs. sloped areas.
On a flat area, and a fixed step-over, you will always be removing the same amount of...

Smallest bit with Samll Stepover will give highest resolution (short of using a 2" bit as Steve suggested).


Brian

Nyle,
Once you add a vacuum plenum , 3-1/2" for a core box might be a bit of a stretch with a standard machine.
You have approx 8" clearance, subtract for substrates and vacuum, which leaves +/-...

Joe,

No offense taken, however in my experience, the amount of extra time to program, machine and then hand sand the flat and small detailed areas of the sign do not equal the expense of a thin...

Tony,
I have done many times and have found that it is much more efficient to machine the master (conventional v-carve) and
then to make a rubber mould off the master that can be used to cast...

I have posted before about RhinoCam.
You can search or look at these links.

http://www.talkshopbot.com/forum/messages/20164/14199.html?1154302797 ...

Gary,

Exactly,
Thanks, I thought that I had seen something that, however could not find.

Thanks,
Brian

I am going to cut a series of small mountains out of foam. I am trying to minimize cutting time so any suggestions on modifiying ramping values would be appreciated. I have played with them a bit,...

You usually can find Larger XPS at places that specialize in commercial roofs (as it is used as an underlayment), or if you live near water, people who build docks use large pieces as well.

Brian

Bill,

I have enough problems making a greeting on my voicemail.

Is there a PRS Assembly video on the Horizon?

Thanks,
Brian

Bill,

Great work on the videos!
I think a great choice on the voice used as the voice-over. I find some of the voices used on some of these software training videos on youtube quite contrived...

Has anyone created any custom parts to extended the reach/travel of their Z-Axis to make suitable to cut large blocks of foam, if so, is anyone selling such items. I am currently cutting in many...

@Erminio I am located in Queens, NY.

@Ed Lang good point, I meant to say that the two Atlantic Plywoods located here on Long Island do not stock "Trupan".

Brian

I buy from Chesler in New Hyde Park.
They are the only ones that have actual Trupan.
Roberts has lightweight MDF and Atlantic does not have Trupan (they have lightweight)

Chesler has tons of...

Brian,

If this is going to be made of concrete and will only be 1.5" thick, then I am assuming that they are NOT going to wet-cast this, but rather hand lay-up a very very very dry concrete...

According the the gentelman who sharpens my bits, one good thing about Amana (as opposed to CMT and others) is that it has a curved profile on straight bits, so when you get them sharpened they...

Sheldon,

Sorry, however I have not tried Vista.

Brian

Robert,

When you start making moulds, you stop really thinking too much about machine time, etc. as all you need is one perfect master:-)

Brian

John,

If you have been using Rhino 4.0, I would also RX installing the latest service pack (service pack 2) as this fixes some performance issues.

Brian

You could also do a mould and cast out of pottery plaster and have the kids paint them like they do at those birtday parties.

Brian

....actually, on second thought, test would have to only be against a known square (good T-Square) and could not be against a routed groove in table as the SB will think the routed groove is square...

Morris,

Now we are on the same page.
I just thought depending on the tolerances you are getting, that it would an non-invasive way of checking the squareness (as opposed to having to route...