[EMS Discuss] Vacuum former fundraiser
Mon Aug 26 14:47:50 PDT 2013
I think that, for the size platen that Rick is using (even at the small size) a shop vac will not provide adequate suction. Also, iirc, shop vacs quickly hit a vacuum limit; they are not really designed to create a vacuum like what is needed for the vacu-former.
Did a quick google and found that you get much better definition and a faster pull with a vacuum pump w/ tanks vs a shop vac:
Chapter 3 - Vacuum Sources
A simple explanation of what vacuum is and how its measured, with charts and conversion tables. Vacuum is commonly rated in "Inches of Mercury" (IN. HG.) Most commercial vacuum forming is done with 25 -27 IN.HG. with a maximum of about 30 inches possible.
Note:Vacuum cleaners only pull 4 to 6 IN.HG. out of a possible 30 IN.HG. Don't be fooled by the commercials that show them picking up bowling balls. It doesn't matter how many horsepower, or how loud it is, or how much it dims the lights. Even the best "Shop Vacs" don't pull very hard, they just flow a lot of air!
From: EMAIL HIDDEN [mailto:EMAIL HIDDEN] On Behalf Of Hovis Biddle
Sent: Monday, August 26, 2013 1:39 PM
To: Rick Osgood
Cc: EMAIL HIDDEN
Subject: Re: [EMS Discuss] Vacuum former fundraiser
I was thinking of keeping my eyes open for the parts we'll need for the next stage. I think I've seen some systems online that get away with a shop vac, do we need more suction than a shop vac can pull? If you can post any sort of specs or whatever I'll start looking around and seeing what I can scrounge up.
On Mon, Aug 26, 2013 at 11:33 AM, Rick Osgood <EMAIL HIDDEN <mailto:EMAIL HIDDEN> > wrote:
OK I got the parts ordered! Thanks everyone for your assistance. In case you are curious, this is what I ordered:
I purchased the 2x2 single zone. Later if we want to upgrade we can purchase another one and expand the machine size pretty easily. They don't come assembled as you see in the photo so we will be constructing them to look like the photo.
On Mon, Aug 26, 2013 at 10:14 AM, Rick Osgood <EMAIL HIDDEN <mailto:EMAIL HIDDEN> > wrote:
Thanks everyone! I'll get that ordered today.
On Mon, Aug 26, 2013 at 9:36 AM, James Hukill <EMAIL HIDDEN <mailto:EMAIL HIDDEN> > wrote:
Sweet!!! Can't wait to use it.
Next major project we kickstarter it!!!
Sent from my iPhone
On Aug 26, 2013, at 9:34 AM, EMAIL HIDDEN <mailto:EMAIL HIDDEN> wrote:
> I got it. Meant to do more, actually, but just forgot. So hit me up if there are unforeseen expenses. I'll use PayPal.
>> It looks like I need $25 more to get these parts purchased. Are there any
>> takers? Let me know and I can work out a way to collect it if you don't
>> want to use Paypal or Google wallet.
>> On Mon, Aug 12, 2013 at 8:48 AM, Rick Osgood <EMAIL HIDDEN <mailto:EMAIL HIDDEN> > wrote:
>>> Thanks everyone! Between all of us we should have enough funds to move on
>>> to the next step. Mark, I'll send you my account number again. If anyone
>>> else is an OCCU member, let me know and I can send you my account info too.
>>> That's the quickest easiest way to transfer the money. I'm getting a
>>> personal Paypal account setup now so others who have Paypal can use that to
>>> "gift" the funds to me. Anyone who wants to just hand me cash in person,
>>> please let me know and we can just set a time to meet at EMS.
>>> Thanks so much!
>>> On Sat, Aug 10, 2013 at 11:47 AM, Greg Norman <EMAIL HIDDEN <mailto:EMAIL HIDDEN> > wrote:
>>>> What's the best way to get you the $$? Pay Pall work?
>>>> *From:* Rick Osgood <EMAIL HIDDEN <mailto:EMAIL HIDDEN> >
>>>> *To:* discuss <EMAIL HIDDEN <mailto:EMAIL HIDDEN> >
>>>> *Sent:* Friday, August 9, 2013 2:04 PM
>>>> *Subject:* [EMS Discuss] Vacuum former fundraiser
>>>> We're finally nearing completion of the vacuum former. Unfortunately the
>>>> last couple of steps require that we spend larger chunks of money in order
>>>> to proceed. I don't have enough money right now to drop on all of this so
>>>> I thought I would reach out to the EMS community to see if anyone wanted to
>>>> donate some money to the project. When the vacuum former is completed, it
>>>> will live at EMS and be available for all members to use. That was always
>>>> the idea.
>>>> The final three steps we have to do are:
>>>> 1. Purchase, build and install the heating elements ($226.00)
>>>> 2. Purchase and install the vacuum pump system (~$400-$500 if everything
>>>> is bought)
>>>> 3. Install the electrical system (Not sure on the price yet as I have not
>>>> researched it)
>>>> I'm hoping to try and get the $226 together to order the heating element
>>>> kits so we can work on that. Once that is completed, I intend to update
>>>> the group and see if we can organize more funding for the vacuum system.
>>>> When that time comes, I'll have a more detailed plan to show what it
>>>> should specifically cost and where that money is going.
>>>> The heating element kit really needs to be purchased from this source as
>>>> it's one of the most finicky parts of the build. These kits are designed
>>>> specifically for this machine. The vacuum system we may be able to cut
>>>> costs if anyone has a big enough tank (or tanks) and a vacuum pump that can
>>>> draw a good enough vacuum. I'll send more details about that once we get
>>>> to that step in the build process.
>>>> If you have anything you would like to donate to the cause, please let me
>>>> know and we can work it out.
>>>> Discuss mailing list
>>>> EMAIL HIDDEN <mailto:EMAIL HIDDEN>
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