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POLY-FIBER SUPERFIL EPOXY A&B

$61.75/Quart
Part# 09-28250
MFR Model# 8-EF3
DescriptionPart Number
Poly-Fiber SuperFil 1 Qt Kit
(20oz. Resin / 12oz. Hardener)
09-28250

Overview

An ultra lightweight corrosion-inhibiting filler for aircraft, marine, and automotive use. Adheres to composites, bare aluminum, steel, and bare or varnished wood.

Epoxy resin with non-MDA hardener. Ships non-hazardous. Apply EP-420 Epoxy Primer directly over SuperFil.

Superfil is an ultra-lightweight epoxy filler for rough fill and contouring. Comes in two containers. Mix, apply with a squeegee, and let dry overnight. More consistent than hand-mixed micros. Weighs only 3.8 lbs. per gallon.

1 Quart Kit (12 oz. Hardener + 20 oz. Resin)
3 Gallon Kit (1 gal. Hardener + 2 gal. Resin)

HAZARDOUS

Features

  • Composite Filling:
  • Use as you would an epoxy micro slurry. Mix by the weight for the best results. Scuff-sand smooth surfaces before application. Trowel or squeegee to desired thickness. After drying, sand to shape and finish. Works as an excellent filled material.
  • Bare Aluminum:
  • Scruff surface with a Scotch-Brite pad. Treat bare aluminum with E-2300 Conversion Coating prior to application. Apply EP-420 Primer directly over dried SuperFill.
  • Bare Steel:
  • Clean off all rust and oil, and wipe with C-2200 Meti-Sol.
  • Varnished or Bare Wood:
  • Scuff-sand and clean as necessary. EV-400 Epoxy Varnish may be applied directly over SuperFill.

Specifications

  • By Weight (preferred): 2 parts A to 1 part B
  • By Volume: 2 parts A to 1 part B.
  • Thoroughly stir each individual container of part A and part B before combining. Resin or hardener can separate from fillers during storage. After combining parts A and B scape the sides of the Revision on 21 mixing container to insure a through blend. Mix o a consistent high color blue color.
  • Cure: Allow to cure at 70 or above for best results. Lower temperatures will lengthen the cure time
  • Dry Film Cure: 8 hours at 77
  • Cure to Sand: 12 hours at 77
  • Pot Life: One hour at 77
  • Clean Up: MEK before curing occurs
  • Shelf Life: Twi years unopened. Avoid storage above 100. Resin will separate from filler during storage. Remix thoroughly.

Reviews

Was previously opened and missing half of the product.

Jason K Verified Purchase

POLY-FIBER SUPERFIL EPOXY A&B

May 16, 2023

I am a lifelong model Airplane enthusiast. I’ve been building with Balsa and Foam and Fiberglass etc… for over 30 years. I had no idea this product existed until a Facebook group member posted about using it on a 1/7 scale P-40 Warhawk. Intrigue set in and I ordered some to try out because I’m always looking for new and different products and tools that can improve my builds. Let me just say WHERE HAS THIS STUFF BEEN ALL MY LIFE! I feel like I discovered a 2-part cheat code and everyday I find a new way that SuperFil surprises me. This is now a must have on my shelf and a lifelong relationship has been formed. A beyond excellent product that has forever changed the way I build and repair my airplanes. I give it a 20/10 and HIGHLY recommend anyone on the fence give SuperFil a chance, it will NOT disappoint!

Marco S Verified Purchase

POLY-FIBER SUPERFIL EPOXY A&B

February 14, 2023

Alain M Verified Purchase

POLY-FIBER SUPERFIL EPOXY A&B

January 7, 2023

Nothing better for making fillets on my model airplanes.

Keith T Verified Purchase

POLY-FIBER SUPERFIL EPOXY A&B

December 20, 2022

I mainly use this for model aircraft but it’s sooo easy to apply and sand! Nice strength and no shrinkage…. An excellent product!

John G Verified Purchase

POLY-FIBER SUPERFIL EPOXY A&B

August 19, 2022

Fast Shiping great service

Nir S Verified Purchase

POLY-FIBER SUPERFIL EPOXY A&B

June 21, 2022

5 stars

Michael T Verified Purchase

POLY-FIBER SUPERFIL EPOXY A&B

May 12, 2022

Very good timing on the order. Great product. Its light and sands very well.

Allan S Verified Purchase

POLY-FIBER SUPERFIL EPOXY A&B

January 5, 2022

Delivered quickly and on time. Excellent product!

Bo L Verified Purchase

POLY-FIBER SUPERFIL EPOXY A&B

December 14, 2021

excellent stable product

Steve L Verified Purchase

POLY-FIBER SUPERFIL EPOXY A&B

October 20, 2021

Q&A

Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Can you either direct me to, or provide the MSDS for this product please? Cheers, Bruce

We have added the MSDS sheet to the "Documents" tab of this web page. Please review it there.

Q: Does Super-Fil (09-28250) work well on aluminum?

Yes. It is an epoxy base filler and adheres very well to aluminum, wood, and composites.

Q: Will Superfil crack or shrink over long time? Also, what is max depth of fill?

Superfil is an epoxy base material and will not shrink or crack over time like polyester base fillers. The manufacturer does not list a max depth.

Q: Does the filler require a chemical and / or mechanical bond?

This is an epoxy base filler and adheres to many surfaces, but a slightly abraded surface is recommended for the best bond.

Q: You mentioned an abraded surface. I have a well bonded paint, is it necessary to remove the paint and abrade the aluminum or will roughing up the paint surface be sufficient?

No, it is not necessary to remove the paint. Just be aware the Super-Fil will stick to the paint, so if the paint chips off the structure, so will the Super-Fil on it.

Q: Does SuperFil work well on sheet metal?

Yes, It will work on clean metal.

Per Vendor: It can be used as filler on metal, sure, but it should be primed over to seal it.

Q: Can Super Fil be used as a structural adhesive (like regular epoxy) to bond two pieces together?

It is not normally used as an adhesive, so we have no data as to how well it will work.

Q: What is the shelf life for 09-28250 SuperFil Part A & B?

This material has a 2 year shelf life in an un-opened container.

Q: When using in locations which will ultimately be epoxy varnished and fabric covered, should the filler go over or under the varnish?

It should go underneath the varnish. The varnish should seal the superfil.

Q: What can be used to dilute the Super Fil mix so it is not so thick?

Per Poly-Fiber: We do not recommend thinning or diluting this product.

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