Posts for Tag: Oneshop

Lazer Engraving Oneshop Redding

Oneshop has a laser engraver, the Voccell DLS can cut through and engrave quite a few materials and I was very excited to try it out. So I asked Tyler for a quick rundown on the machine and I was off. It's extremely simple to run and there is a list of materials and what outputs for each one to achieve certain things like cutting vs engraving. I did a few test runs with wood using my logo from my small side business and the speed and ease of use are insane! 

I tried it on a piece of metal with not nearly as good of an outcome but still showed up. I tried it with a painted one and anodized but pretty much the same outcome on both where it would only really show at an angle. 

After doing a couple of different test runs of a straight logo and things of that nature, I was curious on what would happen if I tried using an image and converting it to a point where it would show up on wood and still be recognizable. I found an image I liked and tried imputing it directly into the software that creates the g-code for the laser engraver, but it came up very dark and filled the entire area with a straight color which was not what I wanted as you couldn't make out anything in it. Then I remembered my father getting an app that would convert an image to have a sketchy look to it, like a hand drawing. I decided to download the app and convert the image through there, then plug it into the machine and see what would come out. This too didn't have the desired outcome, it would only show the more defined lines which didn't show very much only the bare outlines. I then took the image into photoshop and played around with the contrast, exposure and brightness to a point where I got the sketched lines to be a straight color instead of grayscale. I plugged it into the machine for an example and it looked much more promising. However, the image was of two people (my sister and her boyfriend) and his eyes came up as a straight black blob where you couldn't make out anything. I decided to clean that up manually which only took a couple of minutes and helped a lot with recognizing the people in the photo. 

Here is a photo of the final outcome and before image:

CNC Machining Oneshop Redding (router problems)

Today, when I got to Oneshop the router for the CNC machine, wouldn't turn on, the light would come on indicating that it has power, just the tool wouldn't spin. Was looking around thinking maybe a cord came loose or something of the sort, but nothing was loose. I asked Tyler (oneshop owner) about it and he said the brushes on the motor top may have worn down sufficiently to need to be replaced. Thankfully he had a couple of extra which I installed and that got it working again without a hitch.

After starting up another cut of Kevin (small circular paperweight) it started without issue and ran through about 80% of its path before it suddenly stopped moving. This was a bit annoying and I had noticed it doing the same with another cut. After posting this on Instagram, my brother mentioned having the same issue and that the solution was to lower the tolerance from its default 0.004in to something rougher and just create a new toolpath to clean it up afterward to get a cleaner finish. The reason it does that is the computer has to calculate each layer and multiplies over and over to the point where it overloads and crashes. I believe this is just an issue with this specific machine though I haven't tried it on the larger one they have.

CNC Machining Oneshop Redding

Unfortunately, today didn't start off on a very good foot. Number one, I forgot to save my files from what I did before so I had to start from scratch, which I didn't think would be an issue. Second, I forgot a few of the steps to getting started. My first problem arose when I tried setting the tool for the router and it wouldn't accept a 1/8" drill bit when I put in all the info. I tried other bits and those worked without issue. I called my brother up @jehtradedollar and asked him why this would be. I feel pretty dumb because this was specifically mentioned in the tutorial I watched nearly a dozen times, and that is, drill bits can't be used to mill out a stock, they can only be used for up and down, so drilling a hole straight down would be an example. He said that if its some cheap bit that doesn't have specifications on the packaging then just to set it as either a flat tip or ball. In this case, I chose a ball head tip even though the actual bit is something different. One of the other issues I kept running into was the router would dive into the wood. How it should work is a slow spiral down descending at about .5mm per layer until it touched the wood at which point it would slow down even more and continue on its toolpath. This would prevent it from starting too early if you were to set the y-axis too high, or measured something wrong in the program. The issue I was having is where the machine would stall as its rising then crash down skipping a gear and the machine would think it's still high above the wood and would cut more than it could eat. The problem, like the other one, was pretty obvious, the wood I was using was 1 5/16" and the router was set too low so when it was raised it would get raised to the maximum height at which point it would stall, then plummet. The solution for this was simple and had a couple of different options. The one I went with was to swap the wood out with something shorter. This was a simple fix which may not be a solution for larger parts. Another fix would be to set the router higher, this would allow the maximum height to be set higher and so wouldn't stall going over 1.5". Another solution would be to set the raised height at which the router descends from to start its spiral to be lower over the wood. For this I set it to be about 1/2" above the wood at which point it would start its descent.