What are the different sizes of ground glass joints commercially available?
Common joint sizes are 14/20, 19/22, and 24/40. The first number refers to the inner diameter (in millimeters) of a female joint or outer diameter of a male joint. The second number refers to the length of the joint (Figure 1.1b).
How do you unfreeze ground glass joints?
Unsticking glass to glass joints and stopcocks
If a freezer is available, place the part inside for a brief period of time. Then use gloves and gently twist apart. If a freezer is not convenient, use a hair dryer or a similar type heat gun to gently heat the area. Again, wear gloves and gently twist apart.
How big is a 24 40 joint?
So, for instance, an NS 24/40 joint would be a conical joint where the base of the male joint was 24 mm in diameter and the joint was 40 mm in length.
How are glass joints measured?
The first number represents the outer diameter (OD) in millimeters (mm) at the top (widest part) of the inner joint. The second number represents the ground glass length of the joint in millimeters. The most common US joints are 14/20 and 24/40. These sizes apply only to glassware in the US.
How many mm is 24 40?
Referencing the male version in the image on the right, the first number is the diameter, in millimeters, of the ground part of the joint at the top (largest diameter), and the second number is the length of the ground section; this 24/40 joint is 24 mm at the top (widest diameter), and 40 mm long.
What is frozen joint in glassware?
Most organic glassware uses “ground glass joints,” which have a frosted appearance. They are precisely ground to a certain size (which makes them expensive) and have outer (female) and inner (male) joints so that pieces can be connected together with a tight fit (Figure 1.1a).
How should you remove oil and grease from a ground glass joint?
You can de-grease ground glass joints by wiping them with a kimwipe soaked with hexane or acetone. Do this in the hood vent to prevent you from breathing in the chemicals.
How do you get two pieces of glass unstuck?
Life hacks: Simple trick to separate stuck drinking glasses – YouTube
Are ground glass joints airtight?
Ground glass joints are manufactured to fit quite well with one another, and yet they are not perfectly airtight.
What is a joint size?
The joint size is described by a number of the form xx/yy. The first number denotes the width of the ball and the second number denotes the interior bore of the joint. For example, a 12/2 joint has a 12 mm ball and with a 2 mm hole.
How do you tell what size your bowl piece is?
If you can place a dime over the female ground joint of your bong and it doesn’t slide inside, then it is a 14mm ground joint. If it can slide inside the hole, then it is an 18mm or 19mm joint. Also if you can’t slide a pencil into the hole, then it is a 10mm joint. Once you have the downstem size you need the length.
How do you properly grease a ground glass joint?
Greasing Ground Glass Joints – YouTube
What is the name of glassware No 14?
14 MATTE – Shtox.
What is standard taper joint?
The conically tapered ground glass joints typically have a 1:10 taper and are often labeled with a symbol ST, consisting of a capital T overlaid on a capital S, meaning “Standard Taper”. This symbol is followed by a number, a slash, and another number.
What is the purpose for using silicone grease on a ground glass joint?
Although ground-glass surfaces seal well without the use of lubricants, it is advisable to lubricate them to prevent sticking and breakage.
How do you Unsuction something?
Gum, Adhesive Residue, Glue, Whatever
Citrus cleaner, like Goo Gone (or a lemon or orange peel if you don’t have any cleaner) works great for removing sticky things as well. The added bonus is that everything will smell great once you are done “un-sticking.”
How do you unstick two ceramic bowls?
Quick Kitchen Tip: How to Unstick Two Bowls – YouTube
Why is grease used on ground glass joints?
Ground-glass joints and stopcocks should never be used when dry. Although ground-glass surfaces seal well without the use of lubricants, it is advisable to lubricate them to prevent sticking and breakage.
How do you measure joint size?
To find out if your joint is a 14mm all you need is a dime. If the dime is about the same size as your joint its a 14mm. If the dime falls into the joint its an 18mm, and if the joint is much smaller than a dime you have a 10mm joint. Another common joint size, 18mm joints are usually only found on the largest bongs.
What is the perfect size joint?
In general, relative novices should stick with standard 1.25 size rolling papers and approximately 0.5 grams of cannabis flower per joint. This is enough marijuana for two people realistically and makes it easier to roll the joint.
What is a standard bowl size?
Most bowls hold between 8 to 16 fluid ounces, or 1 to 2 cups.
What’s the difference between male and female bowl pieces?
MALE. Take a look at your go-to bong. If the joint that you fit the bowl onto tapers at the end and you have to put accessories over it, then it’s a male. This means bowl pieces, domes, nails or other adapters must be female.
How do you separate glass stuck together?
Super Quick Video Tips: How to Separate Stuck Glass Cups
How do you get Pyrex unstuck?
Put the outer bowl in hot water and fill the inner bowl with ice cubes. Wait a minute or two, and they should separate with a little pulling. The heat expands the outer bowl, the cold contracts the inner bowl.
How do you get two glass bowls unstuck from each other?
To loosen the bowls, place the bottom one in hot water and fill the top one with ice. The bowls will loosen and you will be able to easily unstick them. If that doesn’t work, apply a bit of oil to the inner rim of the bottom cooking bowl. The oil will help you slide the two cooking bowls apart.