herbivore21
Well-Known Member
The scrape is painstaking, but always worth it ime!
Nice one!! welcome to the glass club brother!
The scrape is painstaking, but always worth it ime!
So @canj00digit? are you finshing the whole purge than scraping tje Pyrex? If so do you have a special tech to remove the bho because I am having trouble imagining chunks like that scraped off Pyrex.
For the corners of the pyrex,bi use single edge blades. The cheaper the better. The cheap ones are usually more flexible. Then it is all about technique. For the curved sides I scrape from the top of the side of the dish, down and towards the center. For the corners, I force the blade to the shape of the corner with brute force.Anyone have any specialty scraping tools? Specifically for the corners of the pyrex? I've used the curved can opener on a swiss-army style knife and it works ok. I know they have curved razor blades (for vinyl floor installing IIRC) at home stores. I have been meaning to pick up one.
Anyone out there make a swiss army style tool/knife with concentrate tools? Would be sweet to have a couple of different tools in that format.
scrape it warm, then just let the blade cool and pop the shatter off the blade.i am about to go back to scraping myself. i just did a run and evapped the ethanol out of a slick sheet lined pyrex. the "fold n peel" method works, but takes a long time and i think scraping is more efficient overall. i hated losing all that flake to my fingers, but maybe i need to warm the dish before scraping. that should eliminate the errl from flaking off the dish yeah...?
One additional question -sorta, kinda on the same subject. Is it more "beneficial" while evaporating off the vestigal solvent (in my case ETOH) by collecting the remaining puddles in the middle and essentially shooting for a consolidated oil mass or is it better to let the oil spread out as much as possible for the initial purge so that more heat gets to as thin a layer of oil as possible?
Avid fan of this thread!!!!!
Thanks!
Also the ptfe sheets crinkle up and crease, leading to uneven heating. Furthermore, they are a fucking nightmare to spread thick deposits of oil if for some reason it bunches up somewhere on the sheet. They never perfectly conform to the rounded edges of most pyrex dishes leading to bunching, uneven crinkling, thick deposits around the edges in these crinkles which take longer to purge than the rest of the batch.You want the oil spread as thinly and evenly as possible. A bigger surface area allows heat to be transferred to the oil much quicker and it's easier for the butane bubbles to escape.
The surface area thing is why I don't use ptfe sheets. I bought a roll of the slicksheet and got maybe 4 runs out it. The only time it was worth the extra 5 bucks per run was when I had ~9g of sticky, decarbed oil to scrape up. It was hard to get the ptfe to lay perfectly flat so the oil didn't collect as evenly. Ptfe transfers heat well, but for small runs that aren't flipped, there seems to be no advantage.
I think I have missed something in this forum, I didn't think you guys were scraping anymore. What benefits do you get from scraping versus ptfe sheets?