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Jagged edge on angled cuts
Hi all!
This is my first post in this great forum, so here goes!
I’ve recently purchased a Golden Sign 720 cutter (I think it’s the same as Dragon Pro and Rabbit).
My problem is that using any speed above 50mm/s gives jagged edges for cuts that are angled at a certain angle. If I cut the letter A, the left (!) side of the first leg of the letter will be jagged. It’s more like a wave-pattern actually.I’ve tried a lot of settings in both cutter and software (ArtCut) without any success.
Another question while I’m at it. The feeding rollers in the plotter makes pressure marks in the vinyl. I’ve adjusted the pressure so that it just grabs the vinyl, but still I’ll get the marks. Will these marks come out or is the vinyl damaged? I suppose a more expensive cutter has rubber rollers and wouldn’t do the same harm to the vinyl.
Any suggestions?
BR,
Matz
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6 Replies
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I get roller marks occasionally on my Graphtec, especially on hot days when I assume the vinyl is a bit soft. They always go away after a while.
I don’t know anything about your plotter so can’t help with that.
Go and introduce yourself in the ‘Say Hello’ forum, you’ll get a lot more answers. 🙂
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As a complete guess from and engineering perspective………
The cutter blade works on the same principle as a shopping trolley wheel i.e. caster angle (also how your car self centers the steering while going forward). The center axis of the wheel trails the pivot access of the wheel station, similarly the cutting blade point trails the center line of the blade spindle. You will undoubtedly have seen plenty of trolleys with wonky wheels that wobble above a certain speed usually due to worn bearings or they have been bashed and are out of alignment.
I know you have said its a new machine, but with the speed/direction related wobble something could be out of alignment. It might be something you have control over adjusting i.e. different blade or something you will just have to live with.
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As a guess I would say too much blade showing and not enough pressure.
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Thanks for your answers!
Well, I tried reducing the blade protrusion as well as the pressure without getting any different results. Right now I’m at about 125g pressure but I’ve tried everything between 50 and 300…
Well, I’ll try again and again. The machine is probably crap and if I’ll keep up working with vinyl I’m going to buy bigger and better.
Now I’m off to the Say Hello forum presenting myself properly.
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Don’t want to put you off but i recently purchased a Rabbit off eBay, I had the exact same problems with yourself, After about 3 months off trying to get it working each day I got half decent results, Using artcut was the only way I got it to work, Play with the sharp angle setting, You need to get the rollers feeding the vinyl 100%, which i found almost impossible. Spent days at this with them, less pressure is better, Only use 2 rollers, two extreme positions, you wont be using this vinyl anyways. Only have the blade out so you can barely see it. Cut settings are slow, cant remember what pressure i settled with as I have recently abandoned the rabbit to the spare room to gather dust , wouldn’t want to sell it to pass on my troubles. Maybe only good for someone who runs them and is well used to them. I purchased a Roland GX24, 20Min’s after out of the box, running a dream. Have no problems with waves on my letters or marks on vinyl and can use all my scrap vinyl for small jobs which would have to go to the bin with the rabbit only. I eventually had to send mine back to my supplier for him to set it up and send back to me. So 3 months later I’m almost £500 down on costs plus + rolls of wasted vinyl and about 80 hours work. Sorry for being negative but pressure your supplier to get it set up for you if you want to save some time.
Tim D -
Well, I just have to accept that the machine is a piece of… But, I’ll try to get the supplier to do his best.
I’ll by a semi-pro machine as soon as I can see that my market is worth it, so to say…
I could always use the parts in the Golden Sign for my planned home built CNC router. Maybe I’ll by and cannibalize a couple more of them on eBay, from guys like myself that given up on them. 😎
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