CUTTING OUT MY FIRST BOARD | CNC BOARD SHAPING MACHINE | EP2

[@louisrevo]

Hey bud, I build shaping machine for Living, I would buy a longer bit from shapers Australia or Marko foam. Also you want the suction in line, not in a T. It will suck the twist out of the blank( because they’re always twisted) it will help keeping your board true. Big suction cup with foam on the edge work best! Good luck

[@reeces_shredlab]

Thanks for the tips! Unfortunately my Z-axis is too short for a larger bit with the way my machine is setup right now. Maybe an upgrade for the future! As for the suction in line, Ill have to look into that as well, thanks again!

[@torchwork8651]

Well done! I’ve had various cnc experience over the years and all those issues are quite normal. Thanks for showing everything, very cool. I really want to build one of these.

[@UHB007]

Super excited to follow your project. I'm getting set to attempt to CNC a board. Thanks for making this video to share your experiences so far.

[@reeces_shredlab]

Awesome! Goodluck with your first attempt!!

[@pacificarealestateinc]

So cool watching your progress and commitment with this!

[@laurieannefaulknerwisevict328]

Way to go! Can't wait to see you shredding on your 1st prototype.

[@AlmostAny1]

Awesome first attempt especially considering you built this! Would love to see some updates.

[@reeces_shredlab]

Thanks! I've just been out of town for the last 4 months, but working on some new videos now.

[@PedroNatividadeSurfboards]

When machining blanks you want to take as little as you can from the deck side, the foam is more dense due to how the are poured in the moulds This will give the surfboard some extra strength and minimise those deck dents 🤙🏼🤙🏼🤙🏼

[@policedog4030]

Just a hunch but maybe try two part Silicone in various durometers or hardness's for the suction cups? Great project and demo. Cut and paste re durometer from Rubbercal: " The softest silicone is a 40A durometer flexible silicone sheet due to its low durometer hardness rating. Solid silicone is offered in 40A, 50A, 60A, and 70A durometer ratings with the material getting harder as the durometer rating gets higher."

[@deanclements1839]

Hi, nice project! Congratulations! can you explain more about positioning the board back on the sucktion cups in the right position when cutting the other side?

[@reeces_shredlab]

Hey Dean, I do the exact same thing for the bottom as I do for the top. Except when cutting the bottom, I have to rearrange the suction cups so that they match the deck of the board model, and not the blank because it has already been cut. You can basically ignore the shape of the blank for the other side. I suggest looking up some videos on "flip machining" to get a better idea.

[@AudioJunkie79]

Nice work! I would love to see a video of how you designed your surfboard in Fusion360. I am using boardCAD but would love to use Fusion360 instead.

[@reeces_shredlab]

Im actually using Shape3D for the board design. I export the file as a .igs and bring it into Fusion so I can make the toolpaths. I don't think Fusion would be very practical for board design.

[@AudioJunkie79]

@@reeces_shredlab thanks for the reply. I will have to try this workflow.

[@angeloramos2007]

Hello friend! Did you use the free version of Shape3D or did you buy the program? Have you tried using BoardCAD? I'm making my CNC to machine surfboards. I made a small CNC Router. I also make hollow Paulownia surfboards. I'm from Brazil, city of Fortaleza. Good work, I will promote your channel

[@hostelride758]

Awesome work thanks for sharing

[@peterkohm9742]

Awesome job do you have a video of 3 D printer build ?

[@reeces_shredlab]

Hey Peter, No I haven't built a 3D printer, although the hardware is pretty much all the same. The main difference would be the 3D printer uses a print head and material extruders instead of spindle. Also the 3D printer would use a slightly different software I believe. More specifically tuned to 3D printing.

[@xConundrumx]

Suction cups might not be your best option seeing this. Maybe use the same trick often used for other cases where workholding is hard. Use painters tape on the blank and on the contact surfaces (where you now have suction cups) and then put superglue on one side and activator (that hardens superglue) on the other tape. This should create a reasonably strong bond and afterwards you can just peel of the painters tape (no superglue goes on the actual workpiece here, only on the painterstape stuck to the workpiece). That or more cups and more negative pressure.

[@reeces_shredlab]

What I've actually ended up doing is removing some of the suction cups. Now I only use 2, there is surprisingly more than enough holding power and much less leakage. I found the more cups, the more leakage. This has been working great for PU blanks. But EPS is much more porous and air is able to leak in through the foam. I have been using wood glue to seal the EPS before placing it on the vacuum fixture. The glue dries relatively fast and doesn't melt the foam. I tried the painters tape as well and found that it didn't connect to the foam well enough. It kept peeling off, and although the tape was sucked down to the machine, the board wasn't connected to the tape. I'll try messing around with the tape a little more. I could have been using crappy tape.

[@samuelhw82]

Have you tried placing vinyl stickers along the suction points on the blank? Might give your better suction/tighter seal.

[@reeces_shredlab]

Are you thinking to try and replace the EVA foam rings with vinyl stickers?

[@samuelhw82]

@@reeces_shredlab I was thinking keep the foam ring set up and place vinyl stickers on the foam it self to create a less porous surface and achieve a better vacuum seal. I saw a few guys in Hawaii do that.

[@reeces_shredlab]

Oh ok Interesting. I was trying with silicone around the suction cups before I tried the foam ,and the silicone wasn't really compressible enough to fill all the cracks. I feel like vinyl stickers might have the same issue. I'll have to test with the vinyl at some point just to see!

[@robertkulka4864]

Hello Reece, I agree with all the other commentators, nice job on that machine, well done indeed! I am experimenting with a CNC to make SUPs and I using a cutter head from saburrtooth. They are relatively small but also a lot less pricy than those from Shapers Australia or others. What brand is your cutter head? Cheers, Rob

[@reeces_shredlab]

Hey Rob, that's awesome, I'm actually just using a Super Rough Kutzal bit that I found on Amazon. It was around $20.00 and has worked well so far.

[@reeces_shredlab]

www.amazon.ca/Kutzall-Extreme-Ball-Shaft-6-3mm/dp/B0721LD4KL/ref=mp_s_a_1_7?crid=16XP1THD5R8BQ&dchild=1&keywords=kutzall&qid=1632124597&sprefix=kutz&sr=8-7

[@karolispg1830]

Nice! What milling bit did you use for this?

[@reeces_shredlab]

Hey Karolis, It's a Kutzal Extreme Coarseness Ball Nose Rotary Burr. You can find them on Amazon in North America.

[@karolispg1830]

@@reeces_shredlab thank you very kindly! Building my own cnc now for the same purpose :)

[@reeces_shredlab]

Awesome! Good luck with the build.

[@motovlogsindonesia]

@@reeces_shredlab possible to email you buddy I have a few questions

[@reeces_shredlab]

@@motovlogsindonesia Sure, [e-mail]

[@surfcloud]

How long it takes you to cut each side more or less? I have also to remove the excess of material on the sides cause I use blank and bed, takes me around 2 hours each side for a 6’3”, I use shape3D CNC option to generate the gcode , thank you mate !!

[@reeces_shredlab]

Hey! 2 hrs per side seems excessively long. I have it down to 20-30 minutes of cutting time per side on shortboards. If I didn't have to remove the excess material, probably about 10-15 mins per side. I'm running 6000 mm/min feedrate in EPS and PU foam. 18000 rpm spindle speed. 1.25" diameter ball endmill. Also a 6mm or even 7mm stepover between finishing passes. Getting the stepover as large as possible without losing quality is a huge time saver. I'm using Fusion 360 to create the toolpaths, lots of options in there to control the machine.

[@surfcloud]

@@reeces_shredlab how deep you go down every pass ?

[@reeces_shredlab]

@@surfcloud on the stringer I only go 3mm at 2000 mm/min. For the foam, the tool just vaporizes it so I go as far down as the tool can go. In this case 30mm is the length of the cutting surface I believe. 5000-6000 mm/min feedrate. 18000 RPM for both the stringer and foam with the burr tool. Has been working for me so far.

[@surfcloud]

@@reeces_shredlab the cutting tool if the length is 30mm, the width might be around 20mm I believe, right? I think I have the same one with 6mm diameter of the shaft. You mention 1.25" diameter but that is even more than the lenght and doesnt look like in the video :))

[@reeces_shredlab]

@@surfcloud Ya haha, I must have just pulled that number off the top of my head. I just checked, the tool is 3/4" diameter with a 1/4" shaft.

[@Pagana4president]

Hey where you get the Cutting Ball for a CNC.. if you can shared, please thank you

[@reeces_shredlab]

Hey Andrea, it's a "Kutzal Extreme Ball Nose Rotary Burr" that I bought through Amazon.

[@Pagana4president]

@@reeces_shredlab Thanks man... I need to figure out the sizes in mm instead of inch..which one you get of the 3 version: Very coarse , Original coarse or fine? 1/2" should be half inches right? Thank you

[@reeces_shredlab]

@@Pagana4president Very coarse if you're cutting foam. And ya 1/2" = 0.5 inches. I'm running 15000 to 18000 RPM for foam.

[@Pagana4president]

@@reeces_shredlab Great, I will buy right now, I ordered some from Australia, really expensive and really big.. too. Thank bro!

[@reeces_shredlab]

@@Pagana4president Did you order the longer tools from Shapers Australia? I've been trying find out what the maximum RPM is for those tools before ordering. I got some 150mm tools from China but they could only handle about 6000 RPM before shaking. Minimum RPM for my machine is 9000

[@markcreamer4649]

How much did the cnc machine cost Thank you

[@reeces_shredlab]

Hey Mark, about $7000.00 CAD.

[@Umami_World]

How did it go man? You out there shredding on it?

[@reeces_shredlab]

Yes! Just waiting for some proper conditions to film using the board.

[@6to6surf4]

any updates

[@reeces_shredlab]

Working on some videos, just been out of town the last 4 months!

[@6to6surf4]

@@reeces_shredlab awesome! cheers!

[@dudeleboski2692]

I presume that you do not hand shape?

[@reeces_shredlab]

No need!

[@samcurrant3390]

Vacume cups!!!