Nothing, The pressure of sanding keeps it in, usually there is enough friction on the shaft that it doesn't fall out as you handle the tool away from the piece you are sanding,
Thanks for sharing this Brian. As soon as I have a moment, I will make some of these for my little workshop. What did you do before you retired? I'm fascinated by your attention to detail, and your approach to problem solving.
I taught metal work and automotive for 34 years. also grew up on a farm where we had to make most things. Did you see the sawmill video I made from junk parts.
Hi Brian, another great idea thanks. Just a quick question: Did you put the crazy glue on the first one because the industrial velcro was not sticky backed (unlike the fabric velcro)? Also, you might consider using a small round ball magnet in the bottom of your homemade inertia sander just to stop the arbour falling out. A ball shaped magnet will keep it there and also act as a bottom bearing. It worked for me😂
The industrial one is also sticky backed, even better than the store bought one. I used the crazy glue to seal the surface of the foam, hopefully to get a better bond in the end. I believe it worked. Had to watch the video as I had forgot about that. I have never hear of the ball magnets, Would be a great idea if there was a dead end hole, the shaft just goes through the bearing to vacant space, but if it would stay on the end and magnetise The shaft it would hold it.. How do you use them, I may be missing something.
@brianprocter6191 Thanks for that Brian. No you are not missing anything. A couple of years ago, I was demonstrating some hollow form turning at my local woodturning club using a wooden articulated jig based on your two videos that you made some time ago. A great success by the way. During the demonstration I also showed members my homemade inertia sander. I just turned a suitable shape handle in oak that fitted comfortably in my hand then at one end I drilled a hole down the centre and at the other end a hole at around 60 degrees to the handle. I pressed a round magnet in the bottom of each hole and a cheap Chinese 1/4 inch ID bronze sleeve into the neck of the hole to act as a bearing. So effectively one handle gives you two positions to place the disc holder in. The magnet holds it in and acts as a bottom bearing, the bonus is that I can insert the handle into an old fashioned wire nails with the head cut off and hang it upside down under a shelf for storage. Everything works a treat but I'm just beginning to have issues with the velcro lifting from the rubber pad hence my question. By the way I'm an avid follower from over the pond who, like you, prefers and enjoys making my own bits and bobs rather than paying silly prices. Similar age too I would suspect- keep up the good work Brian.
@@julianmortimer5057 Thanks for the reply, I understand now, I made one with a bushing but it didn't turn too well. That ball acting like a thrust bearing would do the trick. Feel honoured that you made the low cost articulated arm and it worked for you. Really nice to know. Right now I am experimenting with hydroponics, a real plus here in Northern B. C. Thinking of making a short video, so people don't think I am laying around doing nothing,
I think you would have to make a bigger washer, the wood one may be a better choice as in my first video. I friend of mine went and made his 3 inches, using an inertia sander only wears the outer 1/2 inch then he cuts them down for a 2 inch sanding mandrel. His wood goes to the outer edge of the foam. lathes a nice curve on the wood part to meet the metal pin. Have not seen them in action yet, just pictures.
Cool idea! Thank you for sharing, Brian.
Love this. Thank You for sharing. What prevents the disc/bolt from just dropping out of the bearings please?
Nothing, The pressure of sanding keeps it in, usually there is enough friction on the shaft that it doesn't fall out as you handle the tool away from the piece you are sanding,
@@brianprocter6191 champion, thank you
Thanks for sharing this Brian. As soon as I have a moment, I will make some of these for my little workshop. What did you do before you retired? I'm fascinated by your attention to detail, and your approach to problem solving.
I taught metal work and automotive for 34 years. also grew up on a farm where we had to make most things. Did you see the sawmill video I made from junk parts.
Hi Brian, another great idea thanks. Just a quick question: Did you put the crazy glue on the first one because the industrial velcro was not sticky backed (unlike the fabric velcro)? Also, you might consider using a small round ball magnet in the bottom of your homemade inertia sander just to stop the arbour falling out. A ball shaped magnet will keep it there and also act as a bottom bearing. It worked for me😂
The industrial one is also sticky backed, even better than the store bought one. I used the crazy glue to seal the surface of the foam, hopefully to get a better bond in the end. I believe it worked. Had to watch the video as I had forgot about that. I have never hear of the ball magnets, Would be a great idea if there was a dead end hole, the shaft just goes through the bearing to vacant space, but if it would stay on the end and magnetise The shaft it would hold it.. How do you use them, I may be missing something.
@brianprocter6191 Thanks for that Brian. No you are not missing anything. A couple of years ago, I was demonstrating some hollow form turning at my local woodturning club using a wooden articulated jig based on your two videos that you made some time ago. A great success by the way. During the demonstration I also showed members my homemade inertia sander. I just turned a suitable shape handle in oak that fitted comfortably in my hand then at one end I drilled a hole down the centre and at the other end a hole at around 60 degrees to the handle. I pressed a round magnet in the bottom of each hole and a cheap Chinese 1/4 inch ID bronze sleeve into the neck of the hole to act as a bearing. So effectively one handle gives you two positions to place the disc holder in. The magnet holds it in and acts as a bottom bearing, the bonus is that I can insert the handle into an old fashioned wire nails with the head cut off and hang it upside down under a shelf for storage. Everything works a treat but I'm just beginning to have issues with the velcro lifting from the rubber pad hence my question. By the way I'm an avid follower from over the pond who, like you, prefers and enjoys making my own bits and bobs rather than paying silly prices. Similar age too I would suspect- keep up the good work Brian.
@@julianmortimer5057 Thanks for the reply, I understand now, I made one with a bushing but it didn't turn too well. That ball acting like a thrust bearing would do the trick. Feel honoured that you made the low cost articulated arm and it worked for you. Really nice to know. Right now I am experimenting with hydroponics, a real plus here in Northern B. C. Thinking of making a short video, so people don't think I am laying around doing nothing,
How large can these be made?
I think you would have to make a bigger washer, the wood one may be a better choice as in my first video. I friend of mine went and made his 3 inches, using an inertia sander only wears the outer 1/2 inch then he cuts them down for a 2 inch sanding mandrel. His wood goes to the outer edge of the foam. lathes a nice curve on the wood part to meet the metal pin. Have not seen them in action yet, just pictures.
@@brianprocter6191 you have a wealth of knowledge. Thank you for sharing!