# Newbie alert - joining cylinders of different radii

**URL:** <https://discourse.shapr3d.com/t/newbie-alert-joining-cylinders-of-different-radii/32179>\
**Category:** Modeling Questions\
**Created:** [May 27, 2024, 7:24pm UTC](https://discourse.shapr3d.com/t/newbie-alert-joining-cylinders-of-different-radii/32179 "2024-05-27T19:24:59Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Fluffymonkey](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/fluffymonkey/32/26915_2.png) [@Fluffymonkey](https://discourse.shapr3d.com/u/Fluffymonkey)\
**Post date:** [May 27, 2024, 7:24pm UTC](https://discourse.shapr3d.com/t/newbie-alert-joining-cylinders-of-different-radii/32179/1 "2024-05-27T19:24:59Z")

</div>

OK, complete 3d/CAD modeler here so please bear in mind I don’t know the right words.

Context:  
Two cylinders, both about 3mm thick walls with overlapping radii. Smaller cylinder is centered above the larger cylinder.

Problem:  
How can I “join” the two cylinders with a part of a cone (I can’t even figure out how to draw a cone!) that means the two cylinders with join seamlessly with a slope between them both.

The pics are for context.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/a/4/a4936146f9b40e2620a4c15f4691e206024bb94f.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/a/7/a7106add784eb9755da404d411abf953d298993b.jpeg)

---

<div class="post-metadata">

**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [May 27, 2024, 7:32pm UTC](https://discourse.shapr3d.com/t/newbie-alert-joining-cylinders-of-different-radii/32179/2 "2024-05-27T19:32:29Z")

</div>

First, make the cylinders solid. Then use **Loft** to connect them as cone. Do **Union**.  
Than use the **Shell** tool at both ends with 3mm thickness. You cannot loft non-solid surfaces.

---

<div class="post-metadata">

**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\
**Post date:** [May 27, 2024, 7:52pm UTC](https://discourse.shapr3d.com/t/newbie-alert-joining-cylinders-of-different-radii/32179/3 "2024-05-27T19:52:27Z")

</div>

Like mike said. Or you extrude one cylinder, the choose the top edge and use the Offset edge tool, then select the top faces and continue extruding. Then use the Shell tool.

---

<div class="post-metadata">

**Author:** ![Fluffymonkey](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/fluffymonkey/32/26915_2.png) [@Fluffymonkey](https://discourse.shapr3d.com/u/Fluffymonkey)\
**Post date:** [May 27, 2024, 8:30pm UTC](https://discourse.shapr3d.com/t/newbie-alert-joining-cylinders-of-different-radii/32179/4 "2024-05-27T20:30:05Z")

</div>

I used lateral thought processes to come up with chamfered edges for each cylinder and then moved them to connect.

It’s not elegant, but it works!

I’ll have another go with your methods, thank you @TigerMike and @Oregonerd.

---

<div class="post-metadata">

**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [May 28, 2024, 4:15am UTC](https://discourse.shapr3d.com/t/newbie-alert-joining-cylinders-of-different-radii/32179/5 "2024-05-28T04:15:56Z")

</div>