TCP Global cups

A

aviator8

Promoted Users
I have seen a lot of discussion on bad cups, potential contamination on graduation marks incorrect. I needed to get some cups so I can mix more than the 22oz of my PPS cup to have induced epoxy ready to go for a days spray ahead of time. I have seen a few say they use TCP Global and it was easy because it was amazon so I got two sizes. 64oz and 32oz. Just to be sure before I trusted them I checked both against my 3M and both TCP sizes were off. I tried mixing 1:1 water using pps to measure parts and two different measuring cups and all came out the same. The 32 out cup I mixed to 5 the first 5 is correct. the second 5 the volume is too low. on the 64oz I mixed to the 4 mark. Same deal first mark accurate second 4 volume is too low. I'm not sure what close enough is, but I decided to return the 32 oz and place my own sharpie marks on the few 64oz cups I got for 1:1 mix. I just wanted to pass this along. I'm not sure if its always been off or this is just a miscalculated batch.
 

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I am just old fashon and use a mixing stick in a can or the Dekups. Have about 8 sticks. The paint co's use to give them out , one Glasurit has to be from my uncles shop in the 60's.
 
What I do to check the cup for proper calibration is with a kitchen scale and water. I mark the cup graduations with masking tape to the various levels I need for a specific mixture. In the picture you can see a pint-sized cup taped for 9 oz 1:1:1. Then set the empty cup on the scale and set the tare so the scale reads zero. Then I fill with water to the first graduation and record the weight. Followed filling to the next 2 graduations and also recording the weights. Then do the math. 1 US fluid ounce of water (fl-oz) = 29.57 grams of water (g wt.). If the numbers don't add up adjust where you place the tape. It is time consuming but it's worth the peace of mind IMO.

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Side note, I hate pouring out of a full 1 gallon rectangle can that the activator comes in, even pouring with spout on the high side I always make an absolute mess, and this stuff is sticky! Is there a trick yall use? some pour spout you can get that makes this more controllable and less splashy?
 
aviator8 said:
Side note, I hate pouring out of a full 1 gallon rectangle can that the activator comes in, even pouring with spout on the high side I always make an absolute mess, and this stuff is sticky! Is there a trick yall use? some pour spout you can get that makes this more controllable and less splashy?
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Ask and you shall receive........

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If you can't find the spout adapter, PM me your home address. I buy them from my local paint jobber. I'll buy some more and send you some.
 
i stopped trusting cups a long time ago. false readings are nothing new. had a huge issue back in the 80's.
i just use 2 cups for 1:1 mixes. i still have a dozen sticks i use in straight side cups.
 
Toolin said:
What I do to check the cup for proper calibration is with a kitchen scale and water. I mark the cup graduations with masking tape to the various levels I need for a specific mixture. In the picture you can see a pint-sized cup taped for 9 oz 1:1:1. Then set the empty cup on the scale and set the tare so the scale reads zero. Then I fill with water to the first graduation and record the weight. Followed filling to the next 2 graduations and also recording the weights. Then do the math. 1 US fluid ounce of water (fl-oz) = 29.57 grams of water (g wt.). If the numbers don't add up adjust where you place the tape. It is time consuming but it's worth the peace of mind IMO.

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The US imperial system is so stupid.

If you use the metric instead, 1 ml water = 1 gram.

See how easy that is!?
 
aviator8 said:
Side note, I hate pouring out of a full 1 gallon rectangle can that the activator comes in, even pouring with spout on the high side I always make an absolute mess, and this stuff is sticky! Is there a trick yall use? some pour spout you can get that makes this more controllable and less splashy?
Click to expand...
I pour it into a small pint cup. Just hold the cup right against the pour lip on the can and you won’t spill any. Then pour from the pint cup into your mixing cup. Better control and a lot easier than holding the weight of a full gallon can while trying to get an accurate pour.
 
Lizer said:
I pour it into a small pint cup. Just hold the cup right against the pour lip on the can and you won’t spill any. Then pour from the pint cup into your mixing cup. Better control and a lot easier than holding the weight of a full gallon can while trying to get an accurate pour.
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Lizer said:
I pour it into a small pint cup. Just hold the cup right against the pour lip on the can and you won’t spill any. Then pour from the pint cup into your mixing cup. Better control and a lot easier than holding the weight of a full gallon can while trying to get an accurate pour.
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I use Solo Cups a lot, way cheaper than mixing cups and more accurate
 
RosharonRooster said:
Actually we talked about this today....putting on repop door handles on a 68...3/8 won't fit, 10mm fits, but wait a minute in 68, 10mm wasn't a thing on a car....oh ok let me go over to "this" section of my tool box.....
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I had the same thing happen the other day with the repop door handles for my 56 Cameo. M6 screws. Same with repop window frames.

Don
 
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