I currently use Vcarve pro with my onefinity journeyman X50. I have been attempting to complete a file cut where I do a separate last with a allowance of 0.05in. Half way through the final cut/pass my project shifts causing the project to be ruined. I set the file up and use multiple tabs around the piece to avoid the project piece from separating before the cut is finished. Anyone have this issue or know of a possilbe solution. I need to figure out whats going wrong so that i resolve this issue before wasting anymore good materials.
Are the tabs failing? You can make thicker tabs, more tabs, etc. You can also use double sided table or the blue tape and CA glue method to keep parts in place.
Im trying to get away from doing the blue tape and CA to minimize change over time between pieces. I can run the same file with out performing a separate last pass with out any problem however it leaves traces of each pass along the edge of the piece. Im trying to eliminate these lines by doing the seperate final pass. Im honestly not sure if they tabs are failing.
Sorry, you haven’t provided enough information. How much is the project shifting? Are you talking about the wood moving or are you talking about the cutting shifting over on the wood? I.e last path is not following the previous path?
If you are talking about the wood, how are you holding it in place now? I don’t understand your reason for not using blue tape method. What change are you talking about?
The Wood piece (project) shifts. I am using edge clamps around the edge of the board of which I’m cutting the project out of. I have designed the file with 6-8 tabs spread around the project to prevent the project from breaking lose and potentially shifting during the cut. I make multiple project pieces back to back. I have tried the blue tape/CA glue method the first few times and it took a while to clear the finished project with waste piece and reset with a new board for the next project. I use the clamps so that I can remove the project and waste once the cut is finished and I can place the next board to be cut with minimum time required. I have cut this project several times before (not using the separate final pass function) with zero issues. I am attempting to use the “separate final pass” function so that there are no lines left from each cut/pass at different depths on the edge of the project.
Hi a few pictures of the set up and when the project shifts / breaks free would probably help could you please provide info to cover the points below?
It sound like you are profile cutting a shape out of a solid blank of wood?
You have set out tabs to hold the created part in place and are using edge clamps to hold the blank in place?
So as to produce a clean edge on the component and avoid lots of sanding you then take a full depth pass with a .05 inch radial step over 50 thou?
You are not keen on Blue Tape & CA due to set up / change over time?
I am sure i can help you sort this out as it is what my Onefinity spends around 95% of its time doing, I have just completed 3 projects for customers 200 keyrings, 300 credit card sized wooden signs & 50 dinosaur shaped crayon holders to go on peoples desks, all out of hardwoods and 1/2" thick, 1/4" thick & 1" thick
All produced using Blue Tape & CA with no taps and only one of the jobs requiring a final clean up pass but with some time spent when first producing the items working on cutter selection spindle rpm feeds and speeds.
Happy to work with you to sort things out but it will need a few posts back and forth and a willingness to try a few things
I am limited to pc work with no workshop access at present due to recent surgery but running well on emails forums and cad/cam with profile batch work of around 900 items already on the work schedule sheet .
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What is your board thickness?
How hard of wood?
What bit type & size are you using.
What rpm speed are you running the bit at?
What speed are you moving the router/bit at?
Are you using a climb cut or conventional cut?
Are you using a router or spindle?
How much is the work shifting?
Have you tried re-enforcing the clamping? E.g. Try some screws to see if it still happens.
Is it always in one direction?
Is it ONLY on the final path or are you only noticing it on the final path?
Are you sure the wood is moving or perhaps it is some inaccuracy in the CNC that is shifting the cutter out of alignment?