This all being said, an experiment with a couple of local brands is probably not going to cost you much! 
This all being said, an experiment with a couple of local brands is probably not going to cost you much!
What about just ordering it from eBay in the US and having it shipped to your location. THis one here claims they ship worldwide
http://www.ebay.com/itm/Aqua-Net-Profes … SwwbdWQhiU
Shipping to UK is $20, so the total cost is just under $30. While that does sound like a lot of money, the can will last a very long time, I'm still on my first can, almost 2 years later.
Or you could get 2 cans to minimize shipping costs.
Just a thought...
Not a bad thought Pirvan. One question though, the aforementioned Aquanet is 'Class 2, super hold' whereas I've seen people recommending 'Class 4, extra super hold' or something. Is there a difference between the two, do you know?
]]>For those too young to remember, it happened nearly 32 years ago.
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]]>With the hairspray, check the back of the can for ingredients that match the back of the US aquanet:
Basically the Vinyl Acrylate (VA) Copolymer ingredient is what you're looking for, effectively it's PVA glue in a can.
You know I never bothered to look at the ingredients, but now that I did, I'm glad I don't use this stuff (on my hair).
I mean, would you want all this plastic & vinyl crap in you hair???
]]>http://www.ebay.com/itm/Aqua-Net-Profes … SwwbdWQhiU
Shipping to UK is $20, so the total cost is just under $30. While that does sound like a lot of money, the can will last a very long time, I'm still on my first can, almost 2 years later.
Or you could get 2 cans to minimize shipping costs.
Just a thought...
]]>grob wrote:With the hairspray, check the back of the can for ingredients that match the back of the US aquanet:
...
Basically the Vinyl Acrylate (VA) Copolymer ingredient is what you're looking for, effectively it's PVA glue in a can.Thanks grob for this, had no idea what to look for in a hair spray. Need to go fetch a few candidate cans from a supermarket and give it a try.
Just make sure it has the the ingredient Grob listed, Vinyl Acrylate (VA) Copolymer and it should work.. It has to spray type, pumps won't work.
]]>With the hairspray, check the back of the can for ingredients that match the back of the US aquanet:
...
Basically the Vinyl Acrylate (VA) Copolymer ingredient is what you're looking for, effectively it's PVA glue in a can.
Thanks grob for this, had no idea what to look for in a hair spray. Need to go fetch a few candidate cans from a supermarket and give it a try.
]]>veehoo wrote:Yep, I've started on Pirvan's path and have now done a few (smallish) prints @95C bed temp without issues, will continue from there to find the said threshold.
Sounds like you're on the right path to getting your bed dialed in.
How long does it take to heat up not to only 95°C ?
I did a real measurement this morning, with a stop watch and all this time around .
Starting from a cold printer, hotend cold, chamber cold, printer thermistor reading 21.1C. Glass on top of the mk2b. Time for me to 95C is 12:15 minutes.
I'm not totally satisfied with that, but then again, the prints are good. Somehow for me the aluminium bed gets really hot as well, certainly increasing the heat up time in the process. Maybe I've got the wrong type of VHB tape, the kind that conducts heat or something. I thinks I'm gonna try to put some insulator there in between the aluminium and pcb at some point to test.
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]]>Yep, I've started on Pirvan's path and have now done a few (smallish) prints @95C bed temp without issues, will continue from there to find the said threshold.
The distinction here is, that while you guys are probably using aquanet hairspray, I've been forced to use harispray + gluestick still, haven't found a suitable odorless hairspray here in Europe that'd hold on its own.
And yeah, I totally get your 'better safe than sorry' attitude wrt warping
Sounds like you're on the right path to getting your bed dialed in.
How long does it take to heat up not to only 95°C ?
]]>The distinction here is, that while you guys are probably using aquanet hairspray, I've been forced to use harispray + gluestick still, haven't found a suitable odorless hairspray here in Europe that'd hold on its own.
And yeah, I totally get your 'better safe than sorry' attitude wrt warping
Hi grob,
Thank's for your helpful answer, gave me lots of info and thoughts. I'll start by explaining my build:
I also had a similar bow in my mk2b so that the middle part of the pcb was higher than the corners, so I screwed the pcb to a flat wooden plate before attaching the alu bed with pads of vhb tape. I got it reasonably flat but maybe not perfect, so I'm hoping it'll also settle down straight in time. I put small tape pads on corners, sides, the middle and a few in between. Before that, I glued the thermistor to the mk2b with this: http://www.amazon.com/Arctic-Alumina-Th … B0009IQ1BU . And I also drilled a hole to the alu bed for the thermistor wire to run through and taped the wires on the alu bed. The pcb is definitely not touching the alu bed.
I took your advice and measured the temperature with my (VC99) multimeter, and it shows the same temp as the thermistor so I think I'm good there. Also, i think my thinking has been clouded by the crappy SD4 heater, and maybe I don't need 110C on the thermistor reading with this setup. It'd also help with the heating time, I do get from 20C to 100C in about 12min, the last 10 degrees to 110C is very slow.
So, all in all, maybe I need to stop worrying and start printing
Thanks for your help,
veehoo
Good work, glad it's gone off without a hitch!
Yup, Pirvan's right, somewhere in the 80-100C actual temperature mark holds for most prints. I've found there's a threshold temperature to get the first layer to stick (below about 75-80C I wasn't having much luck), and this is usually good for most parts (even quite large ones... did a 160mm x 25mm x 10mm rectangular part the other day at 90C bed temp with no warp at all. Black ABS @ 240C, enclosure 40~50C, 5mm brim, 0.2mm layers, 60% infill). I tend to err on the higher side if unsure, as a long history of struggling with warping makes me so angry when it happens haha.
]]>No prbs. Hes a reg poster on Voltivo
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