split bushing design

[Anonymous]

hi folks

elemnetry question i guess, im brand new to this game..  want to draw up a one side of a split bushing ( basically a solid cylinder with a hole right through the middle axis and then split it in two halves down the middle axis plane )  i actually only need one half for the 3d printer, see  drawing attached. Any help appreciated to get started .  

using 3ds Max 2020

[RobH2]

Pretty straight forward. 1) make a 'Tube' the right height and diameters using an even number of segments (sides). 2) Chamfer the edge. 3) Create the cylinder for the bolt hole on the side and 'Boolean' it from the tube. 4) In sub-object 'Poly', select and delete half of the tube. 5) Select sub-object 'Border' mode and select the open edge and hit 'Cap' to close it off. 6) Use modifier 'STL Check' to make sure it's manifold so it prints well. 

Use the Max documentation to find any of those things for tips on how to use them. Once you get used to Max, you should be able to make the part in less than 5-minutes.

In fact, I attached a video showing how I made one. It moves kind of fast, but it will give you some hints. And as all things in Max, you could have used a variety of different methods to do the same thing. But I show one way. The only part I left out above is that I forgot the inside of the small hole had to be split as well, complicating the 'Cap' function. There are other ways to fill that open end as well, but again, now you've seen one way to do it. 

Edit: Pretty funny, I just looked at the video, which was one take that I did not edit and it was 4:58, That's under 5-minutes...lol... So, I was not kidding, you can make that part in under 5-minutes.   Also, there is a maximum file size upload limit of 71mb. Mine was 70.848mb. I guess today is my lucky day, I better go play the lottery...!

[Anonymous]

fair play Rob, thanks a mil

ill have a go at it.

rgds

[Anonymous]

just watched the video, pure artistry .

ill try to follow it

tks again for your time

[RobH2]

Ha, funny. Thanks. I hope it helps. If not, write back. 

[Anonymous]

hi Rob

doing a bit better with it now.

so i will get two half bushings 3d printed, they will then need to be bolted together  on the machine in the field. i want to create a flat area each side of the hole so that the the nut and bolt fastner sits flat rather than tightening on the curved cylinder.  this feature can be either etched into the cylinder like in the drawing or grown out from the cylinder which ever  is easier ,   you get my meaning?   any ideas how to do either?  rgds vinny

[RobH2]

Here is a video. The simplest is probably to have the flat surface extend out. If it's a hole, the nut might hit or scrape the sides. You can just add a cylinder and boolean union it to the bushing. If you want me to build this for you I'll do it for cheap. If you want to do that just PM me. 

My video is a little funky. I pause a few times as I look for things. I have buttons setup for some tools and forgot where they really lived. I wanted to show you were they really are so as not to confuse you as you won't have the custom buttons in your toolbar. Anyway, you'll need to locate 'ProBoolean' and it is in the 'Create/Compound Objects' tool bar. Watch the video and you'll get the picture. The final hole boolean subtraction could have been done just once. I had to do it a second time to get the hole in the bump out cylinder I added. Again, pardon the fumbling in the video, you'll understand. 

If you wanted the hole for the nut seat to go 'in' instead of out, just boolean subtract that cylinder instead of union. Move the inside end away from the flat back surface enough to give some thickness along the bolt path and make it large enough for the nut and the nut driver or socket. 

[Anonymous]

ok Rob

what do mean by PM message.
can we communicate by email?

rgds

[RobH2]

Private Message. Just click on me and you'll have the option to Private Message me.