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Hiya Bud.. I would put my money on it that thats your problem then the dremel.I dont know why they do it but yes the are good for precision but motor speed for me is a massive issue. Its just unreliable for the find of engravings I do.I purchased a Cadillac (lol) micromotor as the price was reasonable compared to that of branded micromotore. I purchased one called a "strong 90" (picture below) and its the best investment i have made! Mine included a foot pedal (on and off control) which was a massive plus point as the dremel fitted with the flex shaft was a real pain when having to turn on and off.If you follow me on instagram (@jayengrave) I have a couple of vids using it.Another plus for me with the micromotor was the advantage of changing the direction of the motor.. Now your prob thinking so what! dremels and other rotary tools are designed for right handed people they dont take into account us lefties!! the direction of the motor fixes this issue for me lol.I purchased mine from ebay for around £60~£70 including shipping.It came direct from china which again did not bother me as nearly everything is made in china anyway, so it makes sence to cut out the middle men.Maintenance is not needed really I give mine a whip over now and again to remove dust.The handpeice has little carbon motor brushes inside which are the only things that need replacing from time to time but they are simple to find and replace and I sell them on my website. The handpeice feels very comfortable in the hand and more naturalIt really is a good investment, you would hardly ever need to use your dremel again. I only keep mine now for non glass work :)Hope this helpsLook forward to seeing your future work!
Speed, pressure and burr grades and types all have a part to play in the shade you get. Get a old peice of glass and experiment - I do patch tests with slow - med - fast speeds then try pressure again slow - med - fast.Rememer that the speed of your pass will also make a differenceExample experiment: Draw a line about 5 inches long with a slow speed (less then say 2k rpm if poss)then again with a fast speed (about 30k+ rpm) But making sure both lines take the same length of time to complete.Make the stroke pressure and speed to complete the length equal as much as possible.. then view your result.You may not be able to do this with a dremel as im sure it will not go that slow but if it does try it.Doing these type of experiments and logging the results will help you so much when planning your engravings. Try the same experiments again but with different grades / grits of diamond burrs. Then try different types of media such as Abrasive Rubber (These also come in different grades), White Arkansas Burs produce some interesting results so again do same experiments. Green Silicon Carbideis another medium used which is great for covering larger areas and gives a smoother more uniformed finishGood Luck!!
Are you using a dremel by any chance? - I use to use a dremel but found the motor was unreliable. It would speed up randomly which would create a different shade where I didnt want it!.. so i got a micromotor and handpeice instead.You can check out my hand glass engravings at http://jayengrave.com
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