[pianotech] Vacuum clamping bags

[Mike Spalding]

Greg,

That makes sense, about the stretching/tearing. But as an alternative to 
$1300, I might still try it. Is there a way to align the seam with the 
workpiece to minimize the stretching?

Mike

Greg Newell wrote:
> As I understand it the seams at the edges are no big deal because that part
> of the bag is never stretched. The material going inside the bag needs to
> have some clearance from the edges of the bag or, it is said, the bag will
> tear. Naturally, I'd like to avoid this. I'm guessing that if this were
> possible Joe from Joewoodworker.com would have both tried it and mentioned
> it to me. I'd love to hear to the contrary but Joe said that he couldn't get
> bags made for me with the 5' width. Seems almost any length is possible but
> the bag material doesn't usually come in widths much greater than 4 feet.
> Vacupress.com has a 5X10 bag and a nice pump but it's still rather expensive
> at around $1,300. That includes a 30 mil polyurethane bag. Just looking for
> a better bargain I guess.
>
> Greg Newell
> Greg's Piano Forté
> www.gregspianoforte.com
> 216-226-3791 (office)
> 216-470-8634 (mobile)
>
> -----Original Message-----
> From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
> Of Mike Spalding
> Sent: Thursday, March 25, 2010 10:59 PM
> To: pianotech at ptg.org
> Subject: Re: [pianotech] Vacuum clamping bags
>
> I don't know. I've made a couple of bags from single width. It's fussy 
> work, but not rocket science. Perhaps there is some new problem 
> introduced when you try to go double wide.
>
> Greg Newell wrote:
>   
>> My understanding is that this is fraught with failures. Joe
>> (Joewoodworker.com) himself couldn't sell me a bag of the needed width.
>>     
> Why
>   
>> didn't he just glue them together?
>>
>> Greg Newell
>> Greg's Piano Forté
>> www.gregspianoforte.com
>> 216-226-3791 (office)
>> 216-470-8634 (mobile)
>>
>>
>> -----Original Message-----
>> From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On
>>     
> Behalf
>   
>> Of Mike Spalding
>> Sent: Thursday, March 25, 2010 4:32 PM
>> To: pianotech at ptg.org
>> Subject: Re: [pianotech] Vacuum clamping bags
>>
>> You could glue two or more sheets together for whatever width you need...
>>
>> Greg Newell wrote:
>>   
>>     
>>> Joe's bag material isn't wide enough.
>>>
>>> Greg Newell
>>> Greg's Piano Forté
>>> www.gregspianoforte.com
>>> 216-226-3791 (office)
>>> 216-470-8634 (mobile)
>>>
>>>
>>> -----Original Message-----
>>> From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On
>>>     
>>>       
>> Behalf
>>   
>>     
>>> Of Mike Spalding
>>> Sent: Thursday, March 25, 2010 12:14 AM
>>> To: pianotech at ptg.org
>>> Subject: Re: [pianotech] Vacuum clamping bags
>>>
>>> Greg,
>>>
>>> You may have to fabricate your own. Joe sells urethane sheet by the 
>>> yard, glue, and vacuum fittings. It's not that difficult.
>>>
>>> Mike
>>>
>>> Greg Newell wrote:
>>>   
>>>     
>>>       
>>>> Does anyone have sources for Vacuum clamping bags other than either
>>>> joewoodworker.com or vacupress.com? I’m looking for a size at least 5’
>>>>     
>>>>       
>>>>         
>>> wide
>>>   
>>>     
>>>       
>>>> by 8’ long.
>>>>
>>>> Greg Newell
>>>> Greg's Piano Forté
>>>> www.gregspianoforte.com
>>>> 216-226-3791 (office)
>>>> 216-470-8634 (mobile)
>>>>
>>>>
>>>>
>>>>
>>>>   
>>>>     
>>>>       
>>>>         
>>>   
>>>     
>>>       
>>   
>>     
>
>
>