Lamont wrote:Enjoyed that Tim.
Never used one but seen some vids-I like the way you describe your one in action. Any chance of a wee vid of your hot knife in action?
Didn't see what you paid for it?
If there was a like button I'd hit it right ...now.
Cheers
Warin wrote:presently fleebay $84 .. $20 for an extra blade.
I'd think a 'drill speed controller' would set the maximum power nicely. Add a floor 'throttle' and you could have foot control of the cutter.. setting for minimum and maximum could be added... happy tinkering there.
Lamont wrote:Enjoyed that Tim.
Never used one but seen some vids-I like the way you describe your one in action. Any chance of a wee vid of your hot knife in action?
Didn't see what you paid for it?
If there was a like button I'd hit it right ...now.
Cheers
Lamont wrote:Nice work Tim. Another like for you.
Just wondering...Can you pull the jointed items apart easily with your hands after cutting/welding? Waterproof?
Ta
andrewa wrote:Thank you. You have inspired me to buy one. Ordered on flea bay….
Should make my boat tonneau project a bit neater, as it will any subsequent projects.
A
telemarktim wrote:Lamont wrote:Nice work Tim. Another like for you.
Just wondering...Can you pull the jointed items apart easily with your hands after cutting/welding? Waterproof?
Ta
Hi Lamont, It depends on the fabric and the combinations of fabrics. They all hold together well enough to sew seams easily. They can be pulled apart by hand if the forces are applied at one end (like ripping fabric).The polyester/polyester is the strongest so far. The joint in the photo (blue/silver) failed with a 2kg load. Polyester joined blue to blue side held 3-4kg and eventually failed after holding 4kg for 15 seconds.
Yes, the welds are waterproof if the fabric is waterproof. If followed up by sewing for strength, that is all out the window. However, I have been thinking of using a smear of RTV silicone to seal between the layers, after welding, to make a seal by sewing through it while it is curing. No post on that yet.
I am tinkering (nice work ) with the idea of a custom made blade that may increase the weld strength.
telemarktim wrote:However, I have been thinking of using a smear of RTV silicone to seal between the layers, after welding, to make a seal by sewing through it while it is curing.
Warin wrote:telemarktim wrote:However, I have been thinking of using a smear of RTV silicone to seal between the layers, after welding, to make a seal by sewing through it while it is curing.
I think it would 'gum up' the needle and thread. Might be better cured? I'm not at the stage of experimenting with that. Think I'll just keep with seam sealing those bits.
andrewa wrote:Well, Tim, I’ve been making gear for almost 40yrs….
A
Hi Andrewa, I think I win. I started when I was a student on a commonwealth scholarship. So it has been at least 50 years and I still enjoy doing it, even though I don't really need to. Tim
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