making a hole in a HARD plastic lid? help - Home Brew Forums
Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > making a hole in a HARD plastic lid? help
Cool Brewing Giveaway - Supporting Membership Drive & Discount

Reply
 
Thread Tools
Old 09-16-2012, 11:22 AM   #1
fredthecat
Recipes 
 
Dec 2009
the world
Posts: 491
Liked 14 Times on 14 Posts



hi, i have a nice carboy that i've used before with an improvised plastic bag cover. however this time around i'd love it if i could use the nice plastic lid that came with it and just stick a bung/carboy in it.

the bottle is PET, the lid seems to be labeled "PP", which is polypropylene? it seems very hard, here's some photos http://i.imgur.com/H2Ayf.jpg and http://i.imgur.com/DwEJ3.jpg

i have no real tools, but i can buy some cheap cutting implements if need be. just wondering if anyone has any suggestions for cutting a hole in this? it feels like if i tried cutting into it with a knife the plastic would crack and not be usable. it's probably about 5-7mm thick also... any ideas? or even any totally alternate ideas for a good extra wide mouth carboy cover?



 
Reply With Quote
Old 09-16-2012, 11:29 AM   #2
GilSwillBasementBrews
Super Moderator
HBT_MODERATOR.png
 
GilSwillBasementBrews's Avatar
Recipes 
 
Jul 2012
Eagleville, Pennsylvania
Posts: 2,552
Liked 229 Times on 192 Posts


Why not just drill a hole small enough for the airlock stem and put a rubber grommet in the hole to seal around the airlock?


__________________
Beer Plus Science = .....Good!!!!! By: Adam Savage

 
Reply With Quote
Old 09-16-2012, 11:36 AM   #3
Brewskii
Recipes 
 
May 2011
Williamsburg, Va
Posts: 1,151
Liked 126 Times on 67 Posts


There has to be a way you can access a drill or take it to someone who does and have them do it for you.

If you try and cut it, I predict a laceration in your future.

 
Reply With Quote
Old 09-17-2012, 03:22 AM   #4
Husher
Recipes 
 
Jul 2012
Toronto, Ontario
Posts: 308
Liked 28 Times on 18 Posts


Cutting manually will leave you with an unsymmetrical hole which will not fit a bung properly. What you need is a drill and a 1 inch hold cutting attachment. I bought one from home depot recently for under 10 bucks. Borrow a drill if you need to. The hole cutting attachment will have a drill bit in the center so use that to drill a pilot hold and then take your time going through the plastic so that you don't heat up and melt the plastic. You may need to remove some rough plastic bits after with an 'exacto' knife manually.

I did this recently when making a bottling bucket by drilling the hole for the spigot.

 
Reply With Quote
Old 09-17-2012, 03:29 AM   #5
philjohnwilliams
Recipes 
 
Mar 2010
montreal, Montreal, Quebec
Posts: 209
Liked 23 Times on 20 Posts


Go to Home Depot and buy a spade bit like this one. http://www.homedepot.com/Tools-Hardw...&storeId=10051. If you don't have a drill buy one like this http://www.homedepot.com/Tools-Hardw...&storeId=10051. Put a piece of wood on the opposite side of the lid when you drill it so when the bit makes it through the plastic it will go into the wood. this should help prevent any splitting or cracking of the plastic.

Reason: drunk typing

 
Reply With Quote
Old 09-17-2012, 06:04 AM   #6
fredthecat
Recipes 
 
Dec 2009
the world
Posts: 491
Liked 14 Times on 14 Posts


thanks guys, yeah im gonna need to bite the bullet here and get someone to drill. i would definitely go to home depot and find something, but im in east asia and they really don't seem to have hardware stores at all. that's what makes all this so difficult. i'm probably just going to write out translated instructions and offer a few dollars for some old man to drill a hole in the thing and see how it goes.. i'll try to post results.



 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cut a hole in top of keg, or cut top off? TripleZ Equipment/Sanitation 16 10-26-2011 03:26 AM
Sealing the spigot hole on a plastic fermenter prolific Equipment/Sanitation 13 03-02-2011 05:19 AM
Sanke-Plastic/Stainless/Plastic? Mirage Equipment/Sanitation 2 01-27-2010 03:35 AM
there's a hole in my bucket NateKerx Equipment/Sanitation 6 08-26-2008 03:04 PM
WTF 13/16 hole saw.. aekdbbop Equipment/Sanitation 23 09-19-2007 05:42 PM


Forum Jump