# filling spirals

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#### o1d_dude

##### 'I battle gravity'
TRF Supporter
Wondering if something like this could be used to spin tubes for filling:

Amazon. It’s called a cup turner.

I swear....sometimes I think the internet reads my posts and my mind...

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#### neil_w

##### Chuffed as ninepence
TRF Supporter
At only 2.5 RPM my guess is that is not what you want. Could be the basis of a decent rotisserie unit though.

#### Mx2

##### Member
At only 2.5 RPM my guess is that is not what you want...
Yes, faster speed but you did go a route I haven’t thought of and that is seeing what is all ready on market.

I was thinking about what you said regarding 3” and 4 inch and what one could do quickly, cheaply. No great flashes of inspiration on this end although I was thinking about it.

Currently I have about three Estes rocket kits I still need to build (small tube) and no immediate plans for larger tube. But all it would take is a device like you had found, possibly like a shoe buffer? Ahhhh, maybe? Laying in the back of a Thrift store for about $10 that could be easily converted over.... so I like your thinking what is out there that could turn 3 or 4 inch cardboard tube with minimal re-work and not creating a hazard to fingers and limbs. Hmmmmm... #### Mx2 ##### Member Wondering if something like this could be used to spin tubes... I responded to your post but under the guy below you, Neil W, Interesting but I think low RPMs there’s an issue. #### o1d_dude ##### 'I battle gravity' TRF Supporter Yes, faster speed but you did go a route I haven’t thought of and that is seeing what is all ready on market. I was thinking about what you said regarding 3” and 4 inch and what one could do quickly, cheaply. No great flashes of inspiration on this end although I was thinking about it. Currently I have about three Estes rocket kits I still need to build (small tube) and no immediate plans for larger tube. But all it would take is a device like you had found, possibly like a shoe buffer? Ahhhh, maybe? Laying in the back of a Thrift store for about$10 that could be easily converted over.... so I like your thinking what is out there that could turn 3 or 4 inch cardboard tube with minimal re-work and not creating a hazard to fingers and limbs.
Hmmmmm...
Great idea!

A shoe buffer would an excellent place to start.

#### jrap330

##### Retired Engineer, NAR # 76940
TRF Supporter
Wondering if something like this could be used to spin tubes for filling:

Amazon. It’s called a cup turner.

I swear....sometimes I think the internet reads my posts and my mind...
It is design for cups and mugs....so 3-4 inch diameter????/Video..turns slow....so there goes you saving time by fast spin...sand etc

#### o1d_dude

##### 'I battle gravity'
TRF Supporter
It is design for cups and mugs....so 3-4 inch diameter????/Video..turns slow....so there goes you saving time by fast spin...sand etc
I’d imagine the motor could be replaced easily enough to address the slow speed issue but at this point I’m thinking about @Mx2 ‘s idea of using a shoe buffer...

#### jrap330

##### Retired Engineer, NAR # 76940
TRF Supporter
Back to using drill..issue was beefing up a wooden dowel to hold air frame. If you installed the motor mount...then just glue an engine casing to a dowel and spin. .I do not think shoe buffer/shiner spin fast either..

#### neil_w

##### Chuffed as ninepence
TRF Supporter
I do not think shoe buffer/shiner spin fast either..
Yeah they do. I remember my dad had one way back when.

#### Mx2

##### Member
Back to using drill.....
For now.... my spider senses are tingling.... hmmmm.....

#### BABAR

##### Builds Rockets for NASA
TRF Supporter
If you spin too fast won’t it fling the paint right off?

#### Mx2

##### Member
Possibly. Variable speed control, slow down rpm or quantity of paint.

#### Zbench

##### Member
TRF Supporter
Mx2, I have to hand it to you on that Tamiya Basic Putty. I picked some up after looking at you using it on the video. I discovered that if you just get a little ball on your index finger you can move about 6" around a spiral before you have to reload. If you press and spread it thin it goes even farther.

I am working on an Aspire build and treated the upper half that way, doing both spirals, the deep one and the shallow one. It hardened up in about 20 minutes. I just used a pad of steel wool and worked it in my hand and then sprayed with my Seymour Filling primer. It worked fantastic. One coat and smoothed it out again with the 0000 steel wool and I am done.

That Tamiya putty is pretty tenacious and dries hard. I like that if flows smooth unlike bondo that gets clumpy really fast. It's a great solution. Thanks for the tip.

#### RocketTree

##### Well-Known Member
I mask the spiral above and below with tape. Brush filler primer into the spiral 2-3 coats. Remove tape. Sand down and prime the whole rocket tube. Spirals gone!

If you use automotive filler, get "glazing putty". Bondo body filler is too "hard" to sand on a paper body tube.

All the best!

Mx2