Plastic rotocasting demo with homemade rotocasting machine

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Check out my Facebook Page, Jim Benedict Sculpture at:
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This tutorial video explores the art of hollow cast plastic. Rotational molding, or rotocasting, is a quick and inexpensive way to reproduce an object in lightweight plastic.
This video is the first in a series of tutorial videos I will be producing for this channel.
I made rotocasting machine with metal I had around my shop and bearings, bushings, metal collars, sprockets, and gears from a local bearings supplier. The total cost of materials was around $300, and the project took about a weekend to produce.
The mold is made from MDF and Smooth-On ReoFlex® 40 urethane rubber.
The urethane plastic used in the video is Smooth-On Smooth-Cast® 65D.
www.smooth-on.com
This video was produced by Jim Benedict for this RU-vid Channel, BenedictClass.

Опубликовано:

7 сен 2024

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Комментарии : 62

@Ratlins9 Год назад

Great video, I wanted to know how this type of casting is accomplished, you provided the answer. Thank you.

@fredflinstone1093 10 лет назад

Great video! Instructional and entertaining...... a rare but successful mix. I learned more about the subject by watching this 1 video than I did from all of the other videos I watched combined. Thanx!

@samd7094 4 года назад

Thank you for this video, it answered many questions. The plastic bottle made me understand what goes on in the process. Equally as important was cutting the resin, it gave me an idea of the proportional amount of resin needed to produce that shell. Thank you for going that extra step.

@Hetrisetiawan 2 года назад

a very good machine needs to be imitated and imitated to be developed in my company thank you for the tutorial

@edwardhunter3647 Год назад

Thanks,I need my prototypes made from plastics all of them.

@Betterideas10 3 года назад

good.

@rotomolding 8 лет назад

Very well explained and I should know since I am in the business myself!

@SafetyThirdProps 11 лет назад

Excellent video tutorial, Jim! Informative and entertaining. Thank you so much for taking the time to make this and share.

@rk2045 9 лет назад

THANKS FOR YOUR DEMO VIDEO. INTERESTING DESIGN.

@tedhobgood 8 лет назад

Very informative. Learned a lot from your tips. Thanks!

@drunksimian 11 лет назад

Thanks for the video and I think the milk container is awesome

@benedictclass 12 лет назад

Sorry, I didn't use plans to build this machine. I started with the inside frame and worked my way out, solving problems as I went along. I looked at various machines on youtube and chose the style that fit my needs, was within my budget, and was appropriately challenging for my skill level. If you start your own project and get stumped, you can come back and drop me a line.

@shirkey9 7 лет назад

AWESOME VIDEO

@rototyp4648 5 лет назад

Very helpful and entertaining video. Thank you!

@sppopov5326 9 лет назад

Bravo, great video! Great idea!

@carlosvanderley 9 лет назад

Much humor! Very good!..

@Theory13TV 11 лет назад

awesome job on the video. very nice work!

@stevepercival4774 8 лет назад

love the rockabilly music

@drunksimian 11 лет назад

Thank you

@schedelworld 5 лет назад

This video was so well done. Now I need one of those machines!! The music was great too, made me think of Clarissa Explains it All :) What kind of rubber do you use for the molds?

@schedelworld 5 лет назад

Nevermind, I found the answer in the comments section! Thanks!

@AlottaBoulchit 5 лет назад

OMG I thought of Clarissa too!! I thought there'd be no one else in the comments making a similar claim yet here you are! 😂👍

@gladiatormechs5574 9 месяцев назад

Is it a special type of resin that is used for rotocasting, or can i use SMOOTH ON 66 D which i know is AQUARIUM SAFE ?

@plasmaguy5 9 лет назад

very cool

@finster101 12 лет назад

Nice video, very informative, thanks for sharing. Got any plans for your caster or possible a materials list? Maybe a 'how ya built' it video would be good too.

@RIPPERTON 4 года назад

thanks Sheldon

@arthercasillas2755 8 лет назад

How do I build that gyroscopic jig?

@travisryan6409 10 лет назад

This is a very very silly video, but it is a great example of how basic rotational molding works.

@TheZahnputz 5 лет назад

hi, could you please tell me the size/ ratio of the sprockets you are using? after some experimenting i am currently working with 3:2, which works better than 2:1 (it looks like you are working with 1:2). does switching the gears position within the mashine make a difference?

@migueldiaz3688 9 лет назад

Can i use a fibber glass mould for rotomolding? What can i use for avoid the material get glued to the mould? Thanks Great Video!

@benedictclass 9 лет назад

Miguel Díaz Fiberglass molds are fine as long as there are no undercuts and the inside is free of surface defects. The same goes for vacuformed molds. Without a flexible mold, precision is very important. I use a Smooth-On universal mold release.

@Ociproducts 9 лет назад

At what COST is the smooth on per 1gal kits. 2gal containers

@BuceGar 5 лет назад

That guitar. :-D

@DFEUERMAN 2 года назад

Awesome video. What type of clamps are those? I can't find them for sale with the spring. 9:00 Looks like magnetic head "F-clamp" for welding?

@benedictclass 2 года назад

I think they were Strong Hand 4 in 1 clamps. Several company's make bessey clones now.

@benedictclass 11 лет назад

Smooth-On Urethane Rubber ReoFlex® 40

@pwiest2545 5 лет назад

Hello there ^^ I have a question Mr. Benedict. How do I build a rotating device like the one you have?

@l.r.designstudioslauriesul8993 2 года назад

Do you make these rotocasters for sale ?

@josecarlosdecordes6325 2 года назад

Plastic ir resina fiberglass?

@eighsapiens3195 9 лет назад

Do you think it would be possible to rotocast something in wax?

@benedictclass 9 лет назад

I have slosh cast wax by hand and it has a gradual setting cycle, so it could very well be possible, but most of the time it would be simpler to just drain the molten core after the desired thickness hardens on the surface.

@drunksimian 11 лет назад

What product are you using to make the mold out of?

@beegreengrowersunionwv.7523 5 лет назад

YOU NEED VODKA !!!!! MIX ACCORDINGLY

@harrisonryan1801 11 лет назад

Do you think this could be applied in mass producing deadmau5 heads?

@schedelworld 5 лет назад

I'm no expert, but I think you'd probably have to make the ears separately. But for the main mask, most likely yes!

@nayeemabdul8107 3 года назад

Hello sir I want to make pvc toy guide me to make material list ratio and temperature and time please reply 140 gram camponent

@benedictclass 3 года назад

I don't, know how to help with your exact set of questions, but I can suggest several thin coats is an easy way to trial and error into the correct amount of resin without being wasteful.

@nayeemabdul8107 3 года назад

@@benedictclass thank you sir, that would be quite helpful. Please guide me with this, thanks.