Kolner Gesso-Bole system

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Kolner Gesso-Bole system

Postby GeoSpectrum » Mon Mar 04, 2019 7:55 pm

Does anyone have an experience using this system? Is it an alternative to making up
RSG gesso? I’m keen to start teaching myself gilding.
Alan Huntley
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Re: Kolner Gesso-Bole system

Postby vintage frames » Tue Mar 05, 2019 10:56 am

I've never used it but here are my thoughts. For most gilding you will need a smooth ivory like surface and that's what this stuff purports to do. All you need do is open the can, paint on at least three coats, let dry and sand back with grades of sand-paper. Looking at an average of 500ml for most gilding jobs, then that quantity will have cost around £48 or so. And of course you will have learnt - nothing!
If you make up the same quantity of RSG gesso then the materials cost is about 90p. As you aleady spray paints, then you can easily revert to spraying the gesso. There really is a lot of guff talked about RSG gesso and it's application, maybe to frighten the amateurs off. If you can run a business, boil an egg, then making gesso is a sinch. Post again if you want to know more.
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Re: Kolner Gesso-Bole system

Postby GeoSpectrum » Tue Mar 05, 2019 12:14 pm

Thanks for the reply. good point about the cost
I hadn’t looked at that yet. One question regarding sorayingvgesso
I used to use an aluminium HVLP gun for paint but
Found it a real pain to keep clean and now use a plastic gun which is OK (ish) for paint by probably not for gesso. Is gesso easier to clean off equipment?
As I may get a gun just for gesso.
Alan Huntley
Ashcraft Framing
Plain wood frames, Inlay/tray frames and painted frames for artists.
http://www.ashcraftframing.co.uk
Twitter: @AshcraftFrames
Our Blog: http://ashcraftframing.wordpress.com/
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Re: Kolner Gesso-Bole system

Postby vintage frames » Tue Mar 05, 2019 12:38 pm

A plastic or metal gun makes no difference. To clean the gun, boil a kettle and run that through the gun for a minute or so. Maybe a cheap gun for gesso might be a good idea. Gesso won't interfere with any paint in the gun but paint will interfere with the gesso.
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Re: Kolner Gesso-Bole system

Postby Not your average framer » Tue Mar 05, 2019 12:45 pm

I bought a jar of their bole and it had a big lump of bole surrounded with fluid, for the money it cost I expected better. On ocassions that I have needed gesso, I have mostly made it myself using industrial gelatine and whiting, I have used RSG a couple of times, but the industrial gelatine is in very small flakes and takes very little time from start to finish to prepare and use.

I can't remember the name of the company who supplied the industrial gelatine, but they also supply ingredients for making soap and supply colophany resin, which is useful for making wood pasta ornamentation, or compo. I don't carry out repairs using these materials very often as most of my repair jobs are not of sufficient value and customers don't want to pay very much, hence I use more modern methods and material to be able to work quickly.

It's not that I am against using traditional materials, I leave that choice to the customer. However most customers don't want to pay any more than they have to.
Mark Lacey

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― Geoffrey Chaucer
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Re: Kolner Gesso-Bole system

Postby GeoSpectrum » Tue Mar 05, 2019 1:23 pm

All very interesting thanks. I’m going to investigate the industrial
Gelatine and have a go at making and spraying some RSG gesso.

I’ll report back...
Alan Huntley
Ashcraft Framing
Plain wood frames, Inlay/tray frames and painted frames for artists.
http://www.ashcraftframing.co.uk
Twitter: @AshcraftFrames
Our Blog: http://ashcraftframing.wordpress.com/
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Re: Kolner Gesso-Bole system

Postby vintage frames » Tue Mar 05, 2019 2:14 pm

WHOA! Why on earth would anyone want to use industrial gelatine to make gesso. Sorry Mark, but that is a bit bizarre. I'm not saying it won't work but let's try to keep things simple and straight foward. Remember others are listening in. Buy this RSG from -
https://www.goldleafsupplies.co.uk/rabbit-skin-glue-manetti-5742/
I found it gives the best results so far. These people also supply the whiting. You'll need 1kg RSG and 2.5kg whiting.
The other things on your shopping list will be a double boiler -
https://www.amazon.co.uk/Ancillary-Range-Porringer-Double-Boiler/dp/B007X2DELU/ref=pd_sbs_201_3/260-8750718-8543462?_encoding=UTF8&pd_rd_i=B007X2DELU&pd_rd_r=45f24722-3f50-11e9-aaff-27d05f5ca95c&pd_rd_w=dbzQM&pd_rd_wg=mknqU&pf_rd_p=18edf98b-139a-41ee-bb40-d725dd59d1d3&pf_rd_r=QN9XP8VNNR7T7E94W4VS&psc=1&refRID=QN9XP8VNNR7T7E94W4VS
a home-brew type thermometer and a small electric hob. Oh, and a sieve also.
Come back when you've got them all.
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Re: Kolner Gesso-Bole system

Postby GeoSpectrum » Wed Mar 06, 2019 8:29 am

That's for the help Vintage. I've ordered a double boiler and thermometer. I have the rest.....
Alan Huntley
Ashcraft Framing
Plain wood frames, Inlay/tray frames and painted frames for artists.
http://www.ashcraftframing.co.uk
Twitter: @AshcraftFrames
Our Blog: http://ashcraftframing.wordpress.com/
Doing nothing is a much underrated activity
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