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Matt Gilliland
09-21-2011, 11:47 PM
Hey Everybody!
Scott (our lead machinist) and I wanted to share a major success in our production methods today...

Our Router table (Haas SR100) has a 4x8 foot vacuum table capacity. We typically draw a vacuum with a significantly smaller vacuum pump than is normally used - we can do this by using non-porous spoil-boards and non-porous finished product material.

However, one of the issues that we run into is the requirement to *coax* into place the material as it is being "sucked" down by the vacuum pump. The volume (if you can call it that) of vacuum is typically quite small, which necessitates a larger pump.

Today we created a very large "vacuum reservoir", which as the video shows, makes the "suck-down" a no-hands, no extra weights, no muss, no fuss, event!

This may be boring to some of you, but it really is a cool addition to our "arsenal" of in-house capabilities :-)

Check it out:


http://www.youtube.com/watch?v=D6HJfIjFGSo

This dramatically enhances our ability to produce (in this case) Madeusa and Eddie Robot Bases, and various "coming attractions", as well as our Solar Panels, etc.

-Matt

Oldbitcollector (Jeff)
09-21-2011, 11:49 PM
Wow.. That really sucks...

:)

/ducks

OBC

bomber
09-21-2011, 11:51 PM
Where is the video? I do not see a video. It is not on Parallax's youtube channel either.

$WMc%
09-22-2011, 12:54 AM
Its sucks....Cool

mindrobots
09-22-2011, 02:12 AM
Sometimes it's good to suck!

bsnut
09-22-2011, 02:21 AM
Suck is a good thing. What you don't want is no suck, that want be a bad thing.

BTW, May the suck be with you always

Phil Pilgrim (PhiPi)
09-22-2011, 02:43 AM
Matt,

I'm so glad you put "vacuum reservoir" in quotes! But -- seriously -- what else can you call it? I've got one of those in the trunk of my car, since vacuum is what operates the door locks, trunk lock, gas cap lock, engine shutoff, brake assist, and heaven knows what else. Pulling up a floor mat reveals tiny plastic hoses running everywhere. So I've faced the same dilemma when explaining it to people: what do you call the tank that "stores" the vacuum "supply" when the engine isn't running?

Cool video, BTW!

-Phil

RobotWorkshop
09-22-2011, 02:57 AM
Hello Matt,

Now all you need is a fixture that you can set on top with a few heating elements to hold some plastic sheets and you should be able to do some cool vacuum forming projects....

Robert

Ttailspin
09-22-2011, 03:07 AM
^^^^^^ And with Halloween around the corner, you could put a pumpkin on that thing and see what happens...:innocent:

@ Matt, Did you get all the sand out of everything yet? That stuff sticks to everything..
Wife says, its fire ring and chairs next time, Our treat..:)

-Tommy

Matt Gilliland
09-22-2011, 03:46 AM
@Phil -

what do you call the tank that "stores" the vacuum "supply"
Exactly!? In its purist form it's a storage container for absolutely nothing!

@ Robert -

you should be able to do some cool vacuum forming projects....
My thoughts exactly! A very good, long time friend built his first vacuum forming machine in 1962 - He's still using it - he develops educational equipment for the UC Berkeley Lawrence Hall of Science...
I do see a Vacuum Former in Parallax's future :-)

@ Tommy -
Delightful time @ Pismo! Thanks for joining us :-) Next time? You're on!
And no. We still have sand everywhere - my wife's purse still has 1/2 cup, at least :D

@ the rest of you -
Yeah, you're all correct - in this case, we suck :D

-Matt

Matt Gilliland
09-22-2011, 03:47 AM
...put a pumpkin on that thing and see what happens
You had to go and bring that up?!
Thanks. Thanks a lot :innocent:
-Matt

Ttailspin
09-22-2011, 03:59 AM
I was just sayin... Halloween and all.. What could possibly happen??.

-Tommy

bomber
09-22-2011, 04:02 AM
Where is the video????????????????????????????????????????????? ?????????????????????????????????????????????????? ??????????????????????????????????????

Matt Gilliland
09-22-2011, 04:45 AM
What's goin' on Bomber? It shows up fine in my Chrome as well as Internet Explorer- anybody else having problems seeing it?
-Matt

SRLM
09-22-2011, 05:02 AM
Hi, I am a Chrome user, and I have a problem seeing your video.

(All: Hi Chrome user)

Roy Eltham
09-22-2011, 06:04 AM
I'm using Chrome right now, and I see the video just fine.

SRLM
09-22-2011, 06:11 AM
I suppose I should make the distinction: I am a Chromium user...

Tor
09-22-2011, 09:18 AM
I'm a Chromium user too, and I see the video as well..

-Tor

JLocke
09-22-2011, 02:52 PM
We used to run a small vacuum pump to a medium-sized "air compressor tank" to get enough vacuum to demo a wafer prober in our office. The small pump could produce the needed vacuum, but when the prober was running it would sometimes dip below requirements and stop operation. More of a capacity issue. But it is strange trying to explain that you are building up a reserve reservoir of vacuum!

mindrobots
09-22-2011, 03:03 PM
I think the best part of the video is the tapping on the gauge to "recalibrate" it! :lol:

That being a vacuum gauge, it actually measure how much nothing you have in the reservoir? Cool!

bomber
09-22-2011, 03:08 PM
I still cannot see the video on your post, but I tried replying with a qoute to show the nonexistant video, but then I came accross the video URL. I can copy and paste it to go to the video link. Try re-posting the video. That just might fix it.

Matt Gilliland
09-22-2011, 03:45 PM
actually measure how much nothing you have


it is strange trying to explain that you are building up a reserve reservoir of vacuum

In this application it is obvious that the more nothing you have, the better :smile:
-Matt

Peter KG6LSE
09-22-2011, 04:21 PM
Matt I challenge your Vac to a sucking contest ..
Vs my roomba .





Peter ..

Ttailspin
09-22-2011, 04:32 PM
I think the best part of the video is the tapping on the gauge to "recalibrate" it! :lol:

I wonder why no one has made a "Gauge tapper" before. Maybe some kind of servo set up that automaticly taps the gauges on start up.
Just about every good airplane movie could have used one, in fact there is a scene in star wars that could have used the gauge tapper...

-Tommy

Spiral_72
09-22-2011, 05:02 PM
The video plays nicely on Firefox.

Nice cnc btw. very nice :D



I wonder why no one has made a "Gauge tapper" before. Maybe some kind of servo set up that automaticly taps the gauges on start up.
Just about every good airplane movie could have used one, in fact there is a scene in star wars that could have used the gauge tapper...

-Tommy

Chewy! engage the gauge tapper! we're getting outa' here.

davejames
09-22-2011, 05:22 PM
I'm so glad you put "vacuum reservoir" in quotes! But -- seriously -- what else can you call it?

I'd call it a container of "anti-pressure"! :innocent:

Phil Pilgrim (PhiPi)
09-22-2011, 05:29 PM
I'd call it a container of "anti-pressure"!
Good one! And we all know what happens when pressure and anti-pressure combine!

-Phil

mindrobots
09-22-2011, 06:50 PM
And we all know what happens when pressure and anti-pressure combine!

Somewhere on the 'net a cat picture gets posted.......

Kirk: Spock, get ready to charge the anti-pressure vessels!
Spock: Captain, that's illogical.
Kirk: Ok, then we'll discharge the anti-presure vessels.
Spock: Captain, that won;t work either.
Kirk: Damnit, Spock! I'm a thespian, not a physicist!

Beau Schwabe
09-22-2011, 08:21 PM
But technically isn't the inside nothing the same as the outside nothing, only the inside nothing is just spaced further apart ... So that would mean it's something right? :-)


Seriously ... pumpkins? ... talk about a Pandora's box

W9GFO
09-23-2011, 03:46 AM
I wonder why no one has made a "Gauge tapper" before. Maybe some kind of servo set up that automaticly taps the gauges on start up.

Some aircraft instrument panels have these mounted on the backside (front, really).

Humanoido
09-23-2011, 01:06 PM
Congratulations on a fine project and addition to the machinery in the Tool Shop.

RS_Jim
09-23-2011, 02:45 PM
Piston engine aircraft did not need guage tappers because of the vibration caused by the engine. Now maybe the guage needs a vibration motor like used in a cell phone!
Jim

WBA Consulting
09-23-2011, 06:16 PM
I have always referred to the device in question as a "vacuum chamber", but vacuum reservoir causes a bit of a brain stumble, so it's funner.

Spiral_72
09-23-2011, 07:40 PM
ok, ok.... So what's the joke about a pumpkin???

mindrobots
09-23-2011, 07:48 PM
Sadly, this is one of the times when the forum search works all too well......put in 'laser' and 'pumpkin' and you'll find Ken relating different details of the same tragic tale in two different threads!

W9GFO
09-23-2011, 07:51 PM
Around Halloween someone decided to try using the laser on a pumpkin. It resulted in a multi-thousand dollar repair to fix/replace the optics and other things. Being a laser owner myself, I would be interested in the details as to what exactly caused the damage.

Oldbitcollector (Jeff)
09-23-2011, 07:54 PM
They attempted to cut a pumpkin with a laser?? Wow..

(I thought I was the only one who did crazy stuff like this.. heh..)

Forum gold.. How on earth did I miss this.. link?

OBC

W9GFO
09-23-2011, 08:05 PM
Here's a video of laser carving a pumpkin, as a bonus they use an ingenious rotary fixture;


http://www.youtube.com/watch?v=SDqTp33xjME

mindrobots
09-23-2011, 08:15 PM
This like an Eggbot on a LARGE scale! ...and it has a laser instead of a pen! Next Halloween, it could be time for PumpkinBot!!!

W9GFO
09-23-2011, 08:19 PM
Not a bad idea at all!

Ttailspin
09-23-2011, 08:28 PM
Geeze, I wasn't even thinking about that incident when I mentioned a pumpkin,
I really did want to see a vacuum formed plastic pumpkin for halloween...
Sorry about that. :blush:

Just goes to show you, Oh how the past will haunt.
Even Charlie Brown always knew the Great Pumpkin would return every year...


-Tommy

Oldbitcollector (Jeff)
09-23-2011, 09:01 PM
TIL: Pumpkins invoke bad memories for Parallax employees. :)

OBC

Ttailspin
09-23-2011, 09:39 PM
Well, I for one, will never mention pumpkins on this forum again, But..
It was part of the UPEW guided tour of 2010,
Maybe just don't tell the tale to groups, and specially if the group has me in it..:smile:

I don't want vacuum formed vegetables anymore, I want plastic propeller beanies...

Oh and an Automatic Anti Pressure\Pressure Gage Tapper-ing system too.

-Tommy

Beau Schwabe
09-24-2011, 06:08 PM
A little early but there were no pumpkins harmed with a laser (or suction) in this photo...85346

Matt Gilliland
09-24-2011, 10:27 PM
It was part of the UPEW guided tour of 2010,

True TT, but "those who did it, know their shame" =) The battle cry around here is "no more gourds! no more gourds!"


A little early but there were no pumpkins harmed with a laser (or suction) in this photo

Eh tu, Schwa-bay? Then die Pumpkin! :D

-Matt

Ttailspin
09-25-2011, 01:01 AM
I'll not be goaded into gourd gossip.. I have sworn off of any mention of Cucurbitaceae of any size.

-Tommy