Mainline All Size Stretcher bars

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Mainline All Size Stretcher bars

Postby DEEPJOY » Tue Jun 12, 2018 9:36 pm

Hi All

Anyone used the Mainline All Size stretcher bars? What is the verdict?

They look simple, albeit a wee bit more expensive.
Are they just a friction fit?
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Re: Mainline All Size Stretcher bars

Postby Ed209 » Wed Jun 13, 2018 5:27 pm

I have used them it was my first time canvas stretching had five to do all went very smoothly had no problems with the Mainline system can’t really give you a comparison to others as they are the only ones I have ever used. Bought a box of them and the joining bits and some support bars just in case.


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Re: Mainline All Size Stretcher bars

Postby Ed209 » Wed Jun 13, 2018 5:29 pm

Seems a good system as you can join off cuts with the appropriate joining bit


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Re: Mainline All Size Stretcher bars

Postby DEEPJOY » Thu Jun 14, 2018 7:06 pm

Thanks Ed

Do you glue or staple once joined or are they just friction fit?
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Re: Mainline All Size Stretcher bars

Postby Not your average framer » Thu Jun 14, 2018 10:41 pm

I have not tried these at all, but the Mainline rep has demonstrated them to me. It's quite an impressive system, but I'm not sure how effective the triangular wedges are. When I am fully installed in my new premises and finances are good, I must try these myself to see how they are with an actual framing job.

I'm not particularly bothered about price comparisons, but more interested in how much this will help to make life a little easier. After all, the majority of costs on a canvas stretching job are going to be labour related and not so much materials related.

Also I don't think that it is too much of an issue, when you need to consider securing the corner wedges. I have a couple of long spreader clamps (from machine mart), which can be configured to spread the inside of the stretcher bars and then wood screws could be inserted behind the 45 degree corners of the wedges to prevent the wedges moving.

The advantage of doing this is that if the wedges need tightening again at a later date, you simply undo the screws and start again. Works for me!
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Re: Mainline All Size Stretcher bars

Postby Ed209 » Thu Jun 14, 2018 11:30 pm

Friction fit no stapling or gluing required
I found the whole system very easy to use and they felt firm and secure once assembled
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Re: Mainline All Size Stretcher bars

Postby BaBaZa » Fri Jun 22, 2018 10:19 am

After chatting to Mark on the phone I thought this instructional video may be of interest:

https://mainlinemouldings.com/index.php ... Stretchers
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Re: Mainline All Size Stretcher bars

Postby prospero » Fri Jun 22, 2018 11:48 am

Neat idea. :D

One drawback is that you can't adjust the tension in one direction only. Knocking the triangle in forces the corner in two
directions. OK on most canvases, but occasionally you need to impart tension in one direction and you can only do this
with double-mortised corners where you have 8 keys.
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