JumbleDuck
Well-Known Member
I'd be surprised, with only 1g resolution. I have some micros scales from Maplin which go down to 0.1g. Also much easier to hide when the rozzers approach.
Aldi digital scale
- Thread starter Poignard
- Start date
I'd be surprised, with only 1g resolution. I have some micros scales from Maplin which go down to 0.1g. Also much easier to hide when the rozzers approach.
LittleSister
Well-Known Member
Be surprisedThe cheap 5Kg scales I use for epoxy accurately weigh euro coins down to 1g.
I stand (pleasantly) surprised, then.
Joshua020
New Member
What was a great idea. However, I do doubt the accuracy and precision of the device when it comes to measuring small quantities of your resin and hardener. If the accuracy of measurement is not your concern, then you are good with having misreading’s most of the time. However, you could purchase more sensitive devices or better still get your hands dirty a little bit if you are a technical person. You could construct your own sensitive low weight measuring device by simply purchasing a strain gauge device, bonding it to an elastically deformable platform and then set up the electrical connections. Then you can get some already made electronics to process and display the readings.
Learn more about this in the attached link and you could also order custom solutions from the manufacturer in the link.
Buy Different Load Cell Types, Conditioners & Amplifiers | Tacuna Systems
https://tacunasystems.com/knowledge-base/force-measurement-tips/how-to-build-digital-weighing-scale/
Learn more about this in the attached link and you could also order custom solutions from the manufacturer in the link.
Buy Different Load Cell Types, Conditioners & Amplifiers | Tacuna Systems
https://tacunasystems.com/knowledge-base/force-measurement-tips/how-to-build-digital-weighing-scale/
pvb
Well-Known Member
Or he could get a life....
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Having done just this today, it's worth noting that some resins pour very slowly and the bloody scale can time-out before you've hit your target.
So don't rely on the zero feature to allow for the pot.
So don't rely on the zero feature to allow for the pot.
coopec
N/A
I hope you use different containers (of the same weight) for the epoxy and hardener?
Since both are a fairly "thick" liquids how do you measure the weight of the epoxy/hardener left on the sides of the container or do you use a brush to "scrape" both containers clean?
I have always measured by graduated medicine cups and have no problems with larger quantities (say) 60:30 but I have real problems with small quantities (say) 20:10. When I finish the epoxy container invariably there is virtually nothing left in the hardener container. Some manufacturers give the ratios by weight and others by volume. Apparently some manufacturers don't consider the change in volume caused by temperature change to be significant
(Wherever I can I will use polyester in preference to epoxy)
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KompetentKrew
Well-Known Member
I bought these earlier this year, and find them plenty accurate for small quantities of resin: https://www.amazon.co.uk/dp/B01JKX4QAC/
In fact I have found less accurate scales adequately accurate for weighing 20g of resin or even less.
In fact I have found less accurate scales adequately accurate for weighing 20g of resin or even less.
coopec
N/A
I will probably use very little epoxy from now on but I found this article by a Resin Supplier quite helpful:
Step-by Step Guide: Measuring and Mixing Epoxy Resins
Daydream believer
Well-Known Member
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John the kiwi
Well-Known Member
I use scales for epoxy. I zero an empty container then drip in the part A till i have 4/5ths of the total weight i want.
If i overshoot i tip it back into the container. Then while on the scales i add another 5th of Part B drop by drop. When total weight is reached, mix and use.
Of course if you overshoot the part B , then you have to calculate an extra amount of Part A to add, but with care its easy and accurate and usually get it right first go.
Certainly more accurate than using separte containers and trying to scrape them out for small quantities.
I use west system adhesive and filleting fillers and I can now estimate how much epoxy mix i will need for a particular task with some accuracy.
coopec
N/A
I would avoid using epoxy wherever possible because I believe polyester is a better boat building material.
WHICH RESIN TO USE?? EPOXY vs. POLYESTER vs. VINYLESTER
WHICH RESIN TO USE?? EPOXY vs. POLYESTER vs. VINYLESTER
coopec
N/A
I'd go along with that (I've always thought that)
LoneHort
Well-Known Member
one thing I found with those Aldi scales is the auto power off is very short and if your 1/2 way through pouring your precious resin your goosed if you did not 1)Remember the weight of the container and 2) have a close eye on what weight was poured just before it powered off
Beneteau381
Well-Known Member
That along with a container of oxalic acid crystals should get the attention of HM Border Control if you get pulled!
Poignard
Well-Known Member
That's exactly why I returned it to Aldi after a few days!
Poignard
Well-Known Member
John the Kiwi (post #30) explains the technique I use.
coopec
N/A
Yep! I saw that> Thanks. (You'd know my mate Paul Lunberg?)
Poignard
Well-Known Member
I used to mix epoxy in disposable paper drinking cups but now I use paper ice cream tubs. These are cheap from eBay and the larger base area makes it easier to mix in fillers as well as giving a few moments more time before the mix starts to set.
