Custom J-Hooks and C-Bars

Polyurethane J-hooks and C-bars are a sawmill staple, with the plastic used usually being 75D hardness polyurethane. These hooks and c-bars are typically molded which means there is an upfront tooling cost; however, the per-part price is much lower than a machined part. Redwood Plastics and Rubber can manufacture whatever hook profile you need but there are other modifications to these hooks that can be done to suit customer’s needs. Firstly, a grit surface can be provided which increases the grip characteristics of the hook. LSI (steel later plates) are commonly embedded in the slider block at the top where the hook gets bolted in to provide reinforcement. In addition, the hooks can be manufactured out of SPS2000 which is kraftmill safe.

The colors of the hooks can also be customized (does not cost additional unless it’s a non-standard colour). Other potential additions include adding a screw for metal detectable properties or embedded lubricants.

For assistance or quotation on your plastic hooks or c-bars please contact Redwood Plastics and Rubber.


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Oil-Impregnated Plastics


One of the common advantages of performance industrial plastic is that, when the optimal material is used, they reduce maintenance costs and equipment downtime. This results in substantial cost-savings and, overall, increased profits. Customers ask – how do plastics result in less maintenance or downtime? One common part of maintenance when it comes to bearings, gears, sprockets, and most metal parts is the requirement to grease. Certain plastics require this as well; however, the fun of plastics is that we get to play with formulations.

Many of the plastics that would be used in dynamic applications can be produced with liquid lubricants. This ability to impregnate plastics with oil reduces friction and the need for greasing. This is very valuable in cutting down maintenance costs; however, it’s even better when it comes to parts that are operating in difficult to access workspaces. Having lubricants in the plastic reduces the wear on them and can also increase part life. The changes in cost for lubricant additives are nominal, between 15-30% depending on the plastic but the added benefits are worth it!

For Redwood Plastics and Rubber, playing with formulations for their nylon and Tuffkast line is easy and can allow creativity. For example, we can combine the excellent wear properties of the moly-filled nylon with oil. Or, we could combine an oil-filled Tuffkast with a UV-inhibitor. Sometimes lubricants are not even required for better slickness and higher wear, for example replacing traditional reprocessed UHMW chain channel with Redco Titanium.

For more information how lubricated plastics can help your sawmill please contact Redwood Plastics and Rubber today.

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Product Spotlight: Redco SPS-2000


Redco SPS-2000 is a remarkable plastic that has excellent properties and is far from being one-dimensional. The product was specifically developed to be used for mills supplying fiber to kraft pulp mills (or for use at those mills themselves). SPS-2000 dissolves in the Kraft cooking process and will not contaminate the fiber. This itself makes it an excellent material but there are advantages far exceeding just being kraftmill safe. Firstly, it has the lowest coefficient of friction of all polyurethanes. This makes it very slick. It takes heavy load (2500 PSI) and is also wear and abrasion-resistant. SPS-2000 is oil & solvent resistant and has high dimensional stability.

Applications for this plastic are wide and should be even more widespread. SPS-2000 functions very well as wear strips, liners, flytes, hooks, or virtually any other application requiring a “hard” plastic. An exception would be bearings where the similar lubricated 750XL is available. Like other urethanes, SPS-2000 is easily molded into custom parts.

For more information on how Redco SPS-2000 can benefit you mill, contact Redwood Plastics and Rubber.


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On-Site Sawmill Audit


Are you a purchaser or a maintenance manager at a North American sawmill? Are you curious how performance plastics might be able to positively affect your bottom line and lower costs such as you’ve read on this website previously?

While we can only offer it in select territories, Redwood Plastics and Rubber’s team of technical sales people are willing to come to your sawmill to discuss your needs and audit your mill’s current performance. We would have you take us for a tour while conversing about maintenance and productivity issues you’re dealing with. Along the way we would keep our eyes open for areas our products might be able to assist as well as quickly spot locations where some of our more standardized products such as kiln wheel bushings, sprockets, and chain channel might fit in.

Our focus is on:

  • Reducing maintenance costs/downtime
  • Increasing productivity
  • Reducing energy requirements
  • Increasing part life
  • Increasing profitability

When it comes to pulp mills we can further drill down to the benefits of our pulp-safe plastics both SPS-2000 urethane and Redco Synsteel. To discuss the potential of an on-site sawmill audit please contact Redwood Plastics and Rubber.

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Simple Nylon Pulleys For Sales Online


Do you have a sawmill and are you in need of some simple sheaves/pulleys? Redwood Plastics and Rubber now offers an online store for quick purchase of a simple pulley. You need to know the following information:



-Rope diameter or groove width

-Groove depth

-Bore diameter

The online site will also give you an option for “color” but this is actually choosing between two materials: Redco natural nylon or Redco MD (moly-filled) nylon which is grey. In most cases the MD is superior so default to that choice unless you have a good reason (such as food processing application). You can expect a 4 week delivery for the sheaves so plan accordingly.

To order the sheaves head to Redwood Plastics and Rubber’s site here.

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Cost-Saving And Time-Saving Measures For Kiln Bushings

Redco kiln wheel bushings are a cost-effective solution that have been proven over decades of use. However, the turnaround time on orders often reaches 3-4 weeks, which doesn’t work for emergency needs. Besides stocking up on extra bushings, there is the possibility of stocking plastic rod, which is available in both Redco blue (heat-stabilized) nylon as well as the Hi-Temp Yellow premium grade. While kiln wheel bushings are often provided with grease grooves, this is not necessary for emergency replacements. So as long as your mill has a simple machine shop, stocking rod could be a solution.

Alternatively, you can reduce the complexity of the bushings to make them less expensive. This also means eliminating the grease groove in most cases, as that machining time needs to be accounted for. As with most parts, buying in bulk will save money, not only on the per-piece price but will further reduce costs by limiting the amount of shipping you will need to pay.

For a consultation with a plastics expert to discuss your kiln bushing requirements, please contact Redwood Plastics and Rubber.



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UHMW Extruded Channel Profiles


UHMW channel profiles are a very common sight at North American sawmills. The channel serves to reduce power requirements by making the chain slide easier. In addition, the soft channel reduces wear on the chain as it slides. This saves money immediately (in the lower power costs) and in the long-term with reduced chain wear. Customers are sometimes unsure what profiles are offered and ask for extruded profiles that do not exist. While custom channel can be machined, this is costly with poor availability and usually only available in black.

Redwood Plastics and Rubber’s extruded chain channel is available in “polygold” or yellow. While it is a reprocessed product, unlike the black reprocessed UHMW, the yellow is ‘clean’ meaning the regrind bits are not visible. They are stocked and sold by standard 10 foot lengths; however, 20 foot lengths are available on special order. The profiles are available for several chains, most notably 81x, H78, and C2060. The profiles are sold as simple U-channel; however, all of our profiles can be supplied with plug holes drilled and weld washer’s supplied and this service is provided at each and every Redwood Plastics and Rubber location. This service typically adds $10.00/length and 3-5 business days delivery.

Two important channel profiles of note are the C3 and C4. These are actually channel inserts, which mean they are extruded to fit into C3 and C4 steel channel respectively. They are not designed to be used separately without support.

For more information on Redwood Plastics and Rubber’s extruded UHMW chain channel profiles please click here to view a downloadable brochure.

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Solution Spotlight: PVC Strip Door – Keep The Cold Out!


With the fall comes a bitter chill in many sawmilling regions and it’s consequently the time to invest in PVC strip door supplied by Redwood Plastics and Rubber. PVC strip door covers open entrances helping to keep inside work spaces warm and clear of drafts. The product also serves to protect machinery from dust and contaminants, reduce clean up costs, and decrease energy use. The product is widely stocked in 12″ widths though 8″ and 16″ widths are also available. The product is sold by the full roll.

  • Save Energy with Temperature Retention
  • Increase Productivity by Opening Traffic Flow
  • Reduce Maintenance & Clean Up Costs
  • Improve Working Conditions by Maintaining Ambient Temperatures
  • Improve Employee Safety by Reducing Noise and Increasing Visibility

For a quote on flexible vinyl for your sawmill please contact Redwood Plastics and Rubber.



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BL400 Dovetail Sawguides


Sawguides made from Redco BL400 are one of Redwood Plastics and Rubber’s ‘standard’ products. Stock is kept in full lengths at both our Canadian and U.S. Manufacturing facilities allowing for quick turnaround on orders. This product is a graphite-filled phenolic laminate and offers incredible structural, dimensional, and wear properties. These guides are compatible with any grease, oil, and solvents that may be used on the saws and can take incredible pressure and frictional conditions. Standard lengths are available between 6-60″ with up to 96″ being available on request. In addition, if you want to make your own guides we can sell you just the material.

For more information or pricing on these guides please contact Redwood Plastics and Rubber today.


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Shark Fin Board Turner: FAQs

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Redwood Plastics and Rubber has sold the Shark Fin Board Turning system for well over 20 years. In that time we’ve received plenty of questions about the system and its capabilities and as with any solution, the same set of questions tend to come up. This article is meant to address as many of these as we can – in no particular order:

What are the largest sized boards that can be turned?

Shark Fin has turned boards up to 6″ x 12″ successfully.

What speed can Shark Fin run at?

75LPM or less is ideal, this makes Shark Fin an excellent solution for hardwood mills.

How much does it cost?

This is dependent on several factors including table length, number of graders, and lug pitch. On average one-grader systems start around $18,000 with the largest systems around $60,000. This is very economical compared to other board turning or grading systems.

How do I get it quoted?

There is a simple 1 page quote request form that can be found by region here.

NOTE: The quote is not valid if a sawmill engineer needs to get involved. Redwood Plastics and Rubber provides *parts only*. Installation and design support is not available unless a sawmill engineer is brought in. We have all regions of North America covered.

What is the lead time to get my system?

4-5 weeks is the standard delivery time.

Can I have it quoted “piecemeal”?

The Shark Fin system is designed to function as a kit. Removing any portion of the kit may result in substantially lower performance of the over board turner. The only case a substitution or declining of components is when a direct substitute is available. For example, certain sawmill engineers use their own plastic drive sprockets with the system.

What does the spare parts kit come with?

Each Shark Fin system comes with a spare parts kit. It comes with a couple lugs and an extra turner star. Extra parts in the future can be purchased from Redwood Plastics and Rubber.

What is the guarantee?

If our parts are defective and discovered within 30 days of delivery, we will replace them. However, there is no refund on the system itself.

What are the advantages of Shark Fin over competing systems?

Shark Fin is simple and relies on gravity for its turning power. This means that Shark Fin will not cost you extra money and the simplicity makes it very cost-competitive with more complicated competitors. We also have many testimonials from customers with a proven track record over decades of use.

For more information on the Redco Shark Fin Board Turning System contact an expert today.




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