Love the video. The summer will come, you are not the only one waiting 😉

Very impressive! Thanks for sharing.

Your videos are surreal, seeing that robot in action some day will be awesome. Thanks for making these videos for us 👍

@randomrouting

Жыл бұрын

Thanks! Yeah im so excited about even potentially getting one. Its doable! I just gotta commit! And thanks for watching :)

I saw you posted a video and I was like oh boy I hope he covers some more of his spoil board techniques. I got more then I bargained for. Thank you for the support. I hope the defective machine company wont come after you now :D

@hyperformancellc

Жыл бұрын

So cool your machine had enough pride in building it it that they signed it. Your high on our list of cool people to visit when we go to Europe. A good friend of mine was a foreign exchange student from Finland. Gotta go visit my friend and race in a rally.

@randomrouting

Жыл бұрын

@@hyperformancellc Oh cool! Ofcourse you need to come visit scandinavia! I recommend summer time xD

Noice!

@randomrouting

Жыл бұрын

👌😉

So what's so great about HDF? We ran MDF for a long time, just shaving off the top and bottom over time to get good suction. Bottom chamfers is fun when you do it by flipping the part (not doing it in one go) - you see if the machine is well constructed because if you flip a part then on a chamfer you can see easily 0,1 mm errors in the travel of the machine (welded steel constructions). I had to do a lot of measuring and had to shim the linear rails on the machine to straighten the X and Y a bit (0,11) mm overall error. Luckily skew correction wasn't needed as the machine has been properly calibrated in the factory (less than 0,03 over the full travel - I measured which is ok for a router).

@randomrouting

Жыл бұрын

Vacuum pumps have two things to consider, vacuum level and air flow capacity. There is a vacuum level that the pump can achieve, and a flow rate that maxes out the pump. Most ppl run pumps capable of -800mbar, there is no need for "good airflow" through the spoilboard, its already too good. You want to restrict the airflow so the vacuum level under the alu doesnt equalize instantly when piercing and the pumps can stay in their prefered working range for longer. Shaving of the top/bottom should only be done for flatness, not airflow, unless you run a sidechannel blower or similar probably, if even then.(you can tune the density to match the pumps capabilities) Imagine a scenario with two beds, like my machine, one bed as LDF(low density fiberboard) with extremly good air flow, and other with HDF(high density), you turn on 1 pump for each table. Right now the vacuum gauge would show better vacuum level on the HDF table, since there is more restriction. Now place an alu sheet on both tables. Now both vaccum gauges would show the SAME. It would just take a split second longer to get there for the HDF table.(If it takes longer to get to vacuum levels, it takes longer to remove it too) // note: In fact the LDF table would show a worse value due to leakage on the sides but we are not counting that for this example) Then you start cutting into both alu sheets, air is rushing in under the sheet. The vacuum at the LDF table drops significantly more due to the free flowing air. That pump is already struggling and soon reaching a point where it cant remove the amount of air thats coming in, and the vacuum level under the alu suffers. The HDF table is also leaking air ofcourse, but its restricted in volume, the pump is able to keep up (to a point) and the vacuum level is therefore better. Hence better hold down. With a typical industrial pump, there is no time where a lower density spoilboard is desired. Chamfers on the backside after flipping the parts was a nightmare on my old machine , because of the reasons you point out :) Having these linear scales on the kimla is just amazing, no worries when flipping stuff . Im also having a company come in to (properly) level and do a laser calibration on the kimla in the coming weeks. Its been over 2 years and It did travel from poland to sweden on a truck so i bet there atleast some adjustments needed. Got a special job coming that requires all the precision i can muster.

@chronokoks

Жыл бұрын

@@randomrouting What I like about Kimlas is the super simple windows based system. It is shockingly easy to learn and has great functions. Honestly I don't see a reason for console type CNC control panel with function buttons anymore (we all use PCs so it's a no brainer). And yeah checking the machine with the interferometer to do software compensationshould be mandatory for higher end routers that do metal (basically for all welded construction portal type machines). Abom79 has a great video on calibration of his Flex CNC Long bed machine.

@randomrouting

Жыл бұрын

@@chronokoks Nice! Thanks for the tip, ill check it out.

I do quite a bit of importing from china directly. Big stuff like giant hdf sheets are difficult to transport. So it almost doesnt make sense to do less than a container as the shipping cost would be so high. Just getting a sample/smaller sizes would be much easier though.

@randomrouting

Жыл бұрын

Yeah, i have been looking everywhere for a EU supplier with no luck. I did buy some "Transformerboard" which is 1mm thin but the density was too high for my pumps. Shame since its avaiable in 0.5mm,right size and really good thickness tolerance.

@cncrouterinfo

Жыл бұрын

@@randomrouting big stuff is expensive to ship. especially when it is a low value item like this.

@randomrouting

Жыл бұрын

@@cncrouterinfo Unless its from germany, its cheaper to ship an oversized pallet from germany to me than it is from me to somewhere in sweden. x)

@cncrouterinfo

Жыл бұрын

@@randomrouting haha yeah that can happen. It would be easier to ship smaller sizes. Such as 100x60cm or even perhaps 100x100cm no idea if that is workable in combination with a vacuum table.

HDF is clearly way to go. I always have 3 mm on and when it has too many marks I surface it. It's not so smooth anymore but still holds tight. Thank you for the tip about bottom chamfering. I bought one and I use it when I cut windows for racing cars from Margard (premium PC). It saves a lot of time. Robot's upgrade looks really promising! I gotta try that g-code translation where you go at slight slope. That might be very useful. Shame their manual for PCCam is barely scratching the surface of all the possibilities they programmed. Is there a chance you know how to program pocketing to start from the outline/shape and then clear the rest inside the contour? It's pleasure to see your progress and all those great parts you make.

@randomrouting

Жыл бұрын

I should try surfacing it to compare hold down at some point. For sure its good enough for alot of parts! Yeah the robotstuff is really exciting, still in quote stage tho, ill need to sort financing if im going to get one. It'll take a while. Indeed the pccam manual doesnt cover much, there is SO much more in pccam to discover. I'll take a look at that pocketing thing tomorrow, i have an idea to try. Thanks!

@hyperformancellc

Жыл бұрын

@@randomrouting I have to surface my MDF to get it to hold good. that top layer is hard glue.

Are you saying that you replace the spoil board with every fresh sheet of product

@randomrouting

Жыл бұрын

No, you can use it multpl times but depending on the size of the parts you might not want to. If you just cut hundreds of small parts then the sheet it pretty much done for unless you now cut much bigger parts that can stay put. Even if you previously cut reasonably big parts, if you have a few smaller parts in the next program then you can bet that atleast one of them will end up on those traces and then might shift during cutting, not to bad unless you chamfer the bottom, the tool will not survive 50% of the time id guesstimate. Ofcourse if you are running the same program then you can reuse virtually forever. Tho the hold down is not exacly as good when reusing, not sure why. Probably due to the influx of airflow into the cut perimeter during first pierce, not the same as with a fresh hdf sheet. When its too cut up then i flip it over and use the other side. After that i typically discard it. I have ordered a 60mm facemill now tho so ill be reusing them for those occasions when I need it to be extra flat. But im expecting the hold down to be less good and probably not use them for really small parts. Think i will mount a 1250x500mm alu table on top, next to the hole in the table and use that with a oil lub rotary vane pump and hdf or perhaps datron vacucard for those occasions when i need to cut really really small parts in mass.

Sabaton?

@randomrouting

Жыл бұрын

Holy crap! Thats right! 🎉🎉 😎