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aaron.scott77 replied to the topic Reply To: Help & Questions re: DIY Packraft Construction in the forum Help & Questions re: DIY Packraft Construction 7 years ago
In answering my question..
I measured the temperature on the surface of the copper and found it was about 30 degrees C cooler than the reading from the other sensor.
So that bit of insulation is making a huge difference. In 3d printer land the sensors are often held on using silicone gasket sealant rated to 340 degrees. I think I will probably…[Read more]
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aaron.scott77 replied to the topic Heat-sealing tools in the forum DIY Packrafts 7 years ago
I’ve built a couple of 3D printers and throughout that process I’ve always bought a few spares for when things go up in smoke.
I had a spare control board and heater cartridges. So it was an easy job to mount the heater cartridge inside a piece of copper, along with a thermisistor and heat sink compound.
So I’ve managed to get a PID controlled…[Read more]
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aaron.scott77 replied to the topic Reply To: Help & Questions re: DIY Packraft Construction in the forum Help & Questions re: DIY Packraft Construction 7 years ago
I dialled the temp up to 235c last night and overall it seemed to work a bit better for the 1000D.
My temperature sensor 5+ cm’s back from the sealing area and it is held in place with some heat resistant cotton wrapped around the copper tube. So I’m thinking as its basically an insulator that its probably reading much higher than at the actual…[Read more]
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aaron.scott77 replied to the topic Help & Questions re: DIY Packraft Construction in the forum DIY Packrafts 7 years ago
Hi,
I have a question regarding heat sealing the tubes to the 1000D fabric.
I’ve notice that air bubbles like to form after I’ve sealed the fabric and left it to cool – 10+ minutes afterwards. So I’ve been placing a piece of timber with some weights and leaving it.
This seems to minimise the bubble formation. Then I heat / repeat over and…[Read more]
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aaron.scott77 commented on the post, Overseas? Save money by using a "freight forwarder" 7 years ago
It cost me about $80USD total to get it to Tasmania via a US freight forwarder.
When I first ordered the site was quoting me $140 AUD postage which is a bit of a deal breaker.
I notice now its only quoting about $100AUD.
So I probably wouldn’t have bothered with the forwarder now.However the postage times from the forwarder are generally…[Read more]